OPHTHALMIC IMAGING SYSTEMS INC
8-A12B, 1998-01-02
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
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                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549


                                    FORM 8-A



               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(B) OR (G) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                          OPHTHALMIC IMAGING SYSTEMS
              --------------------------------------------------
              (Exact name of registrant as specified in charter)
              



          CALIFORNIA                                  94-3035367
    -----------------------                        ------------------
    (State of incorporation                         (IRS Employer
      or organization)                             Identification No.)


     221 LATHROP WAY, SUITE I
       SACRAMENTO, CALIFORNIA                            95815
- ----------------------------------------               ----------
(Address of principal executive offices)               (Zip Code)


                             ---------------------


Securities Act registration file number to which this form relates: NOT
APPLICABLE.


          SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT:

      TITLE OF EACH CLASS                       NAME OF EACH EXCHANGE ON WHICH
      TO BE SO REGISTERED                       EACH CLASS IS TO BE REGISTERED
      -------------------                       ------------------------------

      Preferred Share Purchase Rights           Boston Stock Exchange

        SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:

                        PREFERRED SHARE PURCHASE RIGHTS
                        -------------------------------
                               (Title of Class)


                                 Page 1 of 6

<PAGE>


ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

      On December 31, 1997, the Board of Directors of Ophthalmic Imaging Systems
(the "Company") declared a dividend of one preferred share purchase right (a
"Right") for each outstanding share of common stock, no par value per share (the
"Common Shares") payable on January 2, 1998 (the "Record Date") to the
shareholders of record on that date. Each Right entitles the registered holder
to purchase from the Company one one one-hundredth of a share of Series A Junior
Participating Preferred Stock, no par value per share ("Preferred Shares") of
the Company at a price of $10.00 per one one-hundredth of a Preferred Share (the
"Purchase Price"), subject to adjustment. The description and terms of the
Rights are set forth in a Rights Agreement (the "Rights Agreement") between the
Company and American Securities Transfer, Inc., as Rights Agent (the "Rights
Agent").

      Until the earlier to occur of (i) 10 days following a public announcement
that a person or group of affiliated or associated persons (an "Acquiring
Person") shall have acquired beneficial ownership of 20% or more of the
outstanding Common Shares, or (ii) 10 business days (or such later date as may
be determined by action of the Board of Directors prior to such time as any
person or group of affiliated persons becomes an Acquiring Person) following the
commencement of, or announcement of an intention to make, a tender offer or
exchange offer the consummation of which would result in the beneficial
ownership by a person or group of 20% or more of such outstanding Common Shares
(or, in the case of a tender or exchange offer commenced by Premier Laser
Systems, Inc. ("Premier Laser"), a tender or exchange offer the consummation of
which would result in Premier Laser becoming the beneficial owner of an
additional 1% of the Common Shares then-outstanding than are beneficially owned
by Premier Laser as of the close of business on December 31, 1997 (the
"Effective Date")) (the earlier of such dates being a "Distribution Date"), the
Rights will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificate with a copy
of the Summary of Rights (a form of which is included as Exhibit C to the Rights
Agreement) attached thereto. An "Acquiring Person" will not be deemed to include
Premier Laser which has filed a Schedule 13D under the Securities Exchange Act
of 1934, as amended, unless Premier Laser becomes the beneficial owner of an
additional 1% or more of the Common Shares then-outstanding than Premier owned
at the close of business on the Effective Date.

      The Rights Agreement provides that, until the Distribution Date (or
earlier redemption or expiration of the Rights), the Rights will be transferred
with and only with the Common Shares. Until the Distribution Date (or earlier
redemption or expiration of the Rights), new Common Share certificates issued
after the Record Date upon transfer or new issuance of Common Shares will
contain a notation incorporating the Rights Agreement by reference. Until the
Distribution Date (or earlier redemption or expiration of the Rights), the
surrender for transfer of any certificates for Common Shares outstanding as of
the Record Date, even without such notation or a copy of the Summary of Rights
being attached thereto, will also constitute the transfer of the Rights
associated with the Common Shares represented by such certificate. As soon as
practicable following the Distribution Date, separate certificates evidencing
the Rights ("Right Certificates") will be mailed to holders of record of the
Common Shares as of the close of business on the Distribution Date and such
separate Right Certificates alone will evidence the Rights.

      The Rights are not exercisable until the Distribution Date. The Rights
will expire on December 31, 2007 (the "Final Expiration Date"), unless the Final
Expiration Date is extended or unless the Rights are earlier redeemed by the
Company, in each case, as described below.


                                  Page 2 of 6

<PAGE>


      The Purchase Price payable, and the number of Preferred Shares or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares at a price, or
securities convertible into Preferred Shares with a conversion price, less than
the then-current market price of the Preferred Shares or (iii) upon the
distribution to holders of the Preferred Shares of evidences of indebtedness or
assets (excluding regular periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Common Shares) or of subscription
rights or warrants (other than those referred to above).

      The number of outstanding Rights and the number of one one-hundredths of a
Preferred Share issuable upon exercise of each Right are also subject to
adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common Shares payable in Common Shares or subdivisions,
consolidations, or combinations of the Common Shares occurring, in any such
case, prior to the Distribution Date.

      Preferred Shares purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 per share but will be entitled to an
aggregate dividend of 100 times the dividend declared per Common Share. In the
event of liquidation, the holders of the Preferred Shares will be entitled to a
minimum preferential liquidation payment of $100 per share but will be entitled
to an aggregate payment of 100 times the payment made per Common Share. Each
Preferred Share will have 100 votes, voting together with the Common Shares.
Finally, in the event of any merger, consolidation, or other transaction in
which Common Shares are exchanged, each Preferred Share will be entitled to
receive 100 times the amount received per Common Share. These rights are
protected by customary anti-dilution provisions.

      Because of the nature of the Preferred Shares' dividend, liquidation, and
voting rights, the value of the one one-hundredth interest in a Preferred Share
purchasable upon exercise of each Right should approximate the Board of
Director's estimated value of one Common Share.

      In the event that the Company is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold after a person or group has become an Acquiring Person, proper
provision will be made so that each holder of a Right will thereafter have the
right to receive, upon the exercise thereof at the then current exercise price
of the Right, that number of shares of common stock of the acquiring company
which at the time of such transaction will have a market value of two times the
exercise price of the Right. In the event that any person or group of affiliated
or associated persons becomes an Acquiring Person, proper provision shall be
made so that each holder of a Right, other than Rights beneficially owned by the
Acquiring Person (which will thereafter be void), will thereafter have the right
to receive upon exercise that number of Common Shares having a market value of
two times the exercise price of the Right.

      At any time after a person or group of affiliated or associated persons
becomes an Acquiring Person and prior to the acquisition by such person or group
of 50% or more of the outstanding Common Shares, the Board of Directors of the
Company may exchange the Rights (other than Rights owned by such person or group
which have become void), in whole or in part, at an exchange ratio of one Common
Share, or one one-hundredth of a Preferred Share (or of a share of a class or
series of the Company's preferred stock having equivalent rights, preferences,
and privileges), per Right (subject to adjustment).

      With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price. No fractional Preferred Shares


                                  Page 3 of 6

<PAGE>


will be issued (other than fractions which are integral multiples of one
one-hundredth of a Preferred Share, which may, at the election of the Company,
be evidenced by depository receipts) and in lieu thereof, an adjustment in cash
will be made based on the market price of the Preferred Shares on the last
trading day prior to the date of exercise.

      At any time prior to a person or group of affiliated or associated persons
becoming an Acquiring Person, the Board of Directors of the Company may redeem
the Rights in whole, but not in part, at a price of $.01 per Right (the
"Redemption Price"). The redemption of the rights may be made effective at such
time on such basis and with such conditions as the Board of Directors in its
sole discretion may establish. Immediately upon any redemption of the Rights,
the right to exercise the Rights will terminate and the only right of the
holders of Rights will be to receive the Redemption Price.

      The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, except that from and
after such time as any person becomes an Acquiring Person no such amendment may
adversely affect the interests of the holders of the Rights.

      Until a Right is exercised, the holder thereof, as such will have no
rights as a shareholder of the Company, including without limitation, the right
to vote or to receive dividends.

      The foregoing summary description of the Rights and the Rights Agreement
does not purport to be complete and is qualified in its entirety by reference to
the Rights Agreement, a copy of which has been filed as an exhibit to this
Registration Statement, and is hereby incorporated herein by reference thereto.


ITEM 2.  EXHIBITS.

EXHIBIT NO.    DESCRIPTION
- -----------    -----------

     1  -   Rights Agreement, dated as of December 31, 1997, between
            Ophthalmic Imaging Systems and American Securities Transfer, Inc.,
            including form of Rights Certificate attached thereto.

     2  -   Press Release dated December 31, 1997 with respect to the
            announcement of the adoption of the Rights Agreement.



                                   Page 4 of 6

<PAGE>


                                   SIGNATURE


      Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, as amended, the registrant has duly caused this registration statement
to be signed on its behalf by the undersigned, thereto duly authorized.


                                          OPHTHALMIC IMAGING SYSTEMS


January 2, 1998                           By: /s/ STEVEN R. VERDOONER
                                              --------------------
                                                  Steven R. Verdooner
                                                  CHIEF EXECUTIVE OFFICER
                                                      AND SECRETARY


                                 Page 5 of 6

<PAGE>


                                 EXHIBIT INDEX

EXHIBIT NO.    DESCRIPTION
- -----------    -----------

     1  -   Rights Agreement, dated as of December 31, 1997, between Ophthalmic
            Imaging Systems and American Securities Transfer, Inc., including
            form of Rights Certificate attached thereto.

     2 -    Press Release dated December 31, 1997 with respect to the
            announcement of the adoption of the Rights Agreement.


                                 Page 6 of 6


                                   EXHIBIT 1



- --------------------------------------------------------------------------------



                          OPHTHALMIC IMAGING SYSTEMS

                                      AND

                      AMERICAN SECURITIES TRANSFER, INC.


                                 RIGHTS AGENT


                               RIGHTS AGREEMENT

                         DATED AS OF DECEMBER 31, 1997

- --------------------------------------------------------------------------------


<PAGE>


                               TABLE OF CONTENTS
                                                                          PAGE
Section 1.  Certain Definitions............................................ 1

Section 2.  Appointment of Rights Agent.................................... 5

Section 3.  Issue of Right Certificates.................................... 5

Section 4.  Form of Right Certificates..................................... 8

Section 5.  Countersignature and Registration.............................. 9

Section 6.  Transfer, Split Up, Combination and Exchange of Right 
            Certificates; Mutilated, Destroyed, Lost or Stolen Right 
            Certificates..................................................  9

Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Rights. 11

Section 8.  Cancellation and Destruction of Right Certificates............ 12

Section 9.  Availability of Preferred Shares.............................. 13

Section 10. Preferred Shares Record Date.................................. 13

Section 11. Adjustment of Purchase Price, Number of Shares or Number of 
            Rights........................................................ 14

Section 12. Certificate of Adjusted Purchase Price or Number of Shares.... 24

Section 13. Consolidation, Merger, or Sale or Transfer of Assets or 
            Earning Power................................................. 24

Section 14. Fractional Rights and Fractional Shares....................... 26

Section 15. Rights of Action.............................................. 28

Section 16. Agreement of Right Holders.............................. ......28

Section 17. Right Certificate Holder Not Deemed a Shareholder............. 29

Section 18. Concerning the Rights Agent................................... 29

Section 19. Merger or Consolidation or Change of Name of Rights Agent..... 30

Section 20. Duties of Rights Agent........................................ 31

Section 21. Change of Rights Agent........................................ 34

Section 22. Issuance of New Right Certificates............................ 35


                                      -i-

<PAGE>


Section 23. Redemption................................................... 35

Section 24. Exchange..................................................... 36

Section 25. Notice of Certain Events..................................... 38

Section 26. Notices...................................................... 40

Section 27. Supplements and Amendments..................................  40

Section 28. Successors................................................... 41

Section 29. Benefits of This Agreement................................... 41

Section 30. Severability................................................. 41

Section 31. Governing Law................................................ 41

Section 32. Counterparts................................................. 41

Section 33. Descriptive Headings......................................... 42


EXHIBIT A - Form of Certificate of Determination

EXHIBIT B - Form of Right Certificate

EXHIBIT C - Summary of Rights to Purchase Preferred Shares


                                      -ii-

<PAGE>


                               RIGHTS AGREEMENT

      Agreement, dated as of December 31, 1997, between OPHTHALMIC IMAGING
SYSTEMS, a California corporation (the "COMPANY"), and AMERICAN SECURITIES
TRANSFER, INC. (the "RIGHTS AGENT"). 

      The Board of Directors of the Company has authorized and declared a
dividend of one preferred share purchase right (a "RIGHT") for each Common Share
(as hereinafter defined) of the Company outstanding on January 2, 1998 (the
"RECORD DATE"), each Right representing the right to purchase one one-hundredth
of a Preferred Share (as defined herein), upon the terms and subject to the
conditions herein set forth, and has further authorized and directed the
issuance of one Right with respect to each Common Share that shall become
outstanding between the Record Date and the earliest of the Distribution Date,
the Redemption Date and the Final Expiration Date (as such terms are hereinafter
defined).

      Accordingly, in consideration of the premises and the mutual agreements
herein set forth, the parties hereby agree as follows:

      SECTION 1. CERTAIN DEFINITIONS. For purposes of this Agreement, the
following terms have the meanings indicated: 

      (a) "ACQUIRING PERSON" shall mean any Person (as such term is hereinafter
defined) who or which, together with all Affiliates and Associates (as such
terms are hereinafter defined) of such Person, shall be the Beneficial Owner (as
such term is hereinafter defined) of 20% or more of the Common Shares of the
Company then-outstanding, but shall not include the Company, any Subsidiary (as
such term is hereinafter defined) of the Company, any employee benefit plan of
the Company or any Subsidiary of the Company, or any entity holding Common
Shares for or pursuant to the terms of any such plan. Notwithstanding the
foregoing, Premier Laser Systems, Inc., a


                                      1

<PAGE>


corporation which as of the date hereof has filed a Statement on Schedule 13D (a
"SCHEDULE 13D") under the Exchange Act (as defined herein), or any Affiliate or
Associate thereof (together "PREMIER LASER") shall not be deemed an "ACQUIRING
PERSON"; PROVIDED, HOWEVER, that if after the Close of Business (as defined
herein) on December 31, 1997 (the "Effective Date"), Premier Laser shall become
the Beneficial Owner of an additional 1% or more of the Common Shares of the
Company then-outstanding from that number of Common Shares beneficially owned by
Premier Laser as of the Close of Business on the Effective Date, then Premier
Laser shall be deemed an "Acquiring Person"; PROVIDED, FURTHER, that in the
event Premier Laser reduces its ownership of Common Shares below 20% or more of
the Common Shares then-outstanding, then Premier Laser will be treated like any
other holder of Common Shares for the purpose of determining whether it is an
"Acquiring Person". Notwithstanding the foregoing, no person shall become an
"Acquiring Person" as a result of an acquisition of Common Shares by the Company
which, by reducing the number of shares outstanding, increases the proportionate
number of shares beneficially owned by such person to 20% or more of the Common
Shares of the Company then-outstanding (or, in the case of Premier Laser, by an
additional 1% or more of the Common Shares then-outstanding than Premier Laser
beneficially owned as of the Close of Business on the Effective Date); PROVIDED,
HOWEVER, that if a Person shall become the Beneficial Owner of 20% or more of
the Common Shares of the Company then-outstanding (or, in the case of Premier
Laser, an additional 1% or more of the Common Shares then-outstanding than
Premier Laser owns as of the Close of Business on the Effective Date) by reason
of share purchases by the Company and shall, after such share purchases by the
Company, become the Beneficial Owner of any additional Common Shares of the
Company, then such Person shall be deemed to be an "Acquiring Person" for any
purpose of this Agreement.

                                      2

<PAGE>


      (b) "AFFILIATE" and "ASSOCIATE" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Exchange Act (as defined herein), as in effect on the date of this
Agreement.

      (c) A Person shall be deemed the "BENEFICIAL OWNER" of and shall be deemed
to "BENEFICIALLY OWN" any securities:

                (i) which such Person or any of such Person or any of such
Person's Affiliates or Associates beneficially owns, directly or indirectly;

               (ii) which such Person or any of such Person's Affiliates or
Associates has (A) the right to acquire (whether such right is exercisable
immediately or only after the passage of time) pursuant to any agreement,
arrangement or understanding (other than customary agreements with and between
underwriters and selling group members with respect to a bona fide public
offering of securities), or upon the exercise of conversion rights, exchange
rights, rights (other than these Rights), warrants or options, or otherwise;
provided, however, that a Person shall not be deemed the Beneficial Owner of, or
to beneficially own, securities tendered pursuant to a tender or exchange offer
made by or on behalf of such Person or any of such Person's Affiliates or
Associates until such tendered securities are accepted for purchase or exchange;
or (B) the right to vote pursuant to any agreement, arrangement or
understanding; provided, however, that a Person shall not be deemed the
Beneficial Owner of, or to beneficially own, any security if the agreement,
arrangement or understanding to vote such security (1) arises solely from a
revocable proxy or consent given to such Person in response to a public proxy or
consent solicitation made pursuant to, and in accordance with, the applicable
rules and regulations promulgated under the Exchange Act and (2) is not also
then reportable on Schedule 13D under the Exchange Act (or any comparable or
successor report); or

                                      3

<PAGE>


              (iii) which are beneficially owned, directly or indirectly, by any
other Person with which such Person or any of such Person's Affiliates or
Associates has any agreement, arrangement, or understanding (other than
customary agreements with and between underwriters and selling group members
with respect to a bona fide public offering of securities) for the purpose of
acquiring, holding, voting (except to the extent contemplated by the proviso to
Section 1(c)(ii)(B)) or disposing of any securities of the Company.

      Notwithstanding anything in this definition of Beneficial Ownership to the
contrary, the phrase "THEN-OUTSTANDING," when used with reference to a Person's
Beneficial Ownership of securities of the Company, shall mean the number of such
securities then issued and outstanding together with the number of such
securities not then actually issued and outstanding which such Person would be
deemed to own beneficially hereunder.

      (d) "BUSINESS DAY shall mean any day other than a Saturday, a Sunday, or a
day on which banking institutions in the State of California are authorized or
obligated by law or executive order to close.

      (e) "CLOSE OF BUSINESS" on any given date shall mean 5:00 P.M., Eastern
Standard Time, on such date; provided, however, that if such date is not a
Business Day, it shall mean 5:00 P.M., Eastern Standard Time, on the next
succeeding Business Day.

      (f) "COMMON SHARES" when used with reference to the Company shall mean the
shares of common stock, no par value per share, of the Company. "COMMON SHARES"
when used with reference to any Person other than the Company shall mean the
capital stock (or equity interest) with the greatest voting power of such other
Person or, if such other Person is a Subsidiary of another Person, the Person or
Persons which ultimately control such first-mentioned Person.

      (g) "DISTRIBUTION DATE" shall have the meaning set forth in Section 3
hereof.

                                      4

<PAGE>


      (h) "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as
amended from time to time.

      (i) "FINAL EXPIRATION DATE" shall have the meaning set forth in Section 7
      hereof. 

      (j) "PERSON" shall mean any individual, firm, corporation, or other
entity, and shall include any successor (by merger or otherwise) of such entity.
      
      (k) "PREFERRED SHARES" shall mean shares of Series A Junior Participating
Preferred Stock, no par value per share, of the Company having the rights and
preferences set forth in the form of Certificate of Determination attached to
this Agreement as Exhibit A.

      (l) "REDEMPTION DATE" shall have the meaning set forth in Section 7
hereof.

      (m) "SHARES ACQUISITION DATE" shall mean the first date of public
announcement by the Company or an Acquiring Person that an Acquiring Person has
become such.

      (k) "SUBSIDIARY" of any Person shall mean any corporation or other entity
of which a majority of the voting power of the voting equity securities or
equity interest is owned, directly or indirectly, by such Person.

      SECTION 2. APPOINTMENT OF RIGHTS AGENT. The Company hereby appoints the
Rights Agent to act as agent for the Company in accordance with the terms and
conditions hereof, and the Rights Agent hereby accepts such appointment. The
Company may from time to time appoint such co-Rights Agents as it may deem
necessary or desirable.

      SECTION 3. ISSUE OF RIGHT CERTIFICATES. (a) Until the earlier to occur of
(i) the tenth day after the Shares Acquisition Date or (ii) the tenth business
day (or such later date as may be determined by action of the Board of Directors
prior to or after such time as any Person becomes an Acquiring Person) after the
date of the commencement by any Person (other than the Company, any Subsidiary
of the Company, any employee benefit plan of the Company or of any Subsidiary of

                                      5

<PAGE>


the Company or any entity holding Common Shares for or pursuant to the terms of
any such plan) of, or of the first public announcement of the intention of any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company or any entity
holding Common Shares for or pursuant to the terms of any such plan) to
commence, a tender or exchange offer the consummation of which would result in
any Person becoming the Beneficial Owner of Common Shares aggregating 20% or
more of the then-outstanding Common Shares (or, in the case of Premier Laser,
would result in Premier Laser becoming the Beneficial Owner of an additional 1%
or more of the Common Shares then-outstanding than Premier Laser beneficially
owns as of the Close of Business on the Effective Date) (including any such date
which is after the date of this Agreement and prior to the issuance of the
Rights; the earlier of such dates being herein referred to as the "DISTRIBUTION
DATE") (x) the Rights will be evidenced (subject to the provisions of Section
3(b) hereof) by the certificates for Common Shares registered in the names of
the holders thereof (which certificates shall also be deemed to be Right
Certificates) and not by separate Right Certificates, and (y) the right to
receive Right Certificates will be transferable only in connection with the
transfer of Common Shares. As soon as practicable after the Distribution Date,
the Company will prepare and execute, the Rights Agent will countersign, and the
Company will send or cause to be sent (and the Rights Agent will, if requested,
send) by first-class, insured, postage-prepaid mail, to each record holder of
Common Shares as of the close of business on the Distribution Date, at the
address of such holder shown on the records of the Company, a Right Certificate,
in substantially the form of Exhibit A hereto (a "RIGHT CERTIFICATE"),
evidencing one Right for each Common Share so held. As of the Distribution Date,
the Rights will be evidenced solely by such Right Certificates.

                                      6

<PAGE>


      (b) On the Record Date, or as soon as practicable thereafter, the Company
will send a copy of a Summary of Rights to Purchase Preferred Shares, in
substantially the form of Exhibit C hereto (the "SUMMARY OF RIGHTS"), by first
class, postage-prepaid mail, to each record holder of Common Shares as of the
close of business on the Record Date, at the address of such holder shown on the
records of the Company. With respect to certificates for Common Shares
outstanding as of the Record Date, until the Distribution Date, the Rights will
be evidenced by such certificates registered in the names of the holders thereof
together with a copy of the Summary of Rights attached thereto. Until the
Distribution Date (or the earlier of the Redemption Date or the Final Expiration
Date), the surrender for transfer of any certificate for Common Shares
outstanding on the Record Date, with or without a copy of the Summary of Rights
attached thereto, shall also constitute the transfer of the Rights associated
with the Common Shares represented thereby.

      (c) Certificates for Common Shares which become outstanding (including,
without limitation, reacquired Common Shares referred to in the-last sentence of
this Section 3(c)) after the Record Date but prior to the earliest of the
Distribution Date, the Redemption Date, or the Final Expiration Date shall have
impressed on, printed on, written on or otherwise affixed to them the following
legend:

            This certificate also evidences and entitles the holder hereof to
            certain rights as set forth in a Rights Agreement between Ophthalmic
            Imaging Systems and American Transfer Securities, Inc., dated as of
            December 31, 1997 (the "Rights Agreement"), the terms of which are
            hereby incorporated herein by reference and a copy of which is on
            file at the principal executive offices of Ophthalmic Imaging
            Systems. Under certain circumstances, as set forth in the Rights
            Agreement, such Rights will be evidenced by separate certificates
            and will no longer be evidenced by this certificate Ophthalmic
            Imaging Systems will mail to the holder of this certificate a copy
            of the Rights Agreement without charge after receipt of a written
            request therefor. As described in the Rights Agreement, Rights
            issued to any Person who becomes an Acquiring Person (as defined in
            the Rights Agreement) shall become null and void.

                                        7

<PAGE>


With respect to such certificates containing the foregoing legend, until the
Distribution Date, the Rights associated with the Common Shares represented by
such certificates shall be evidenced by such certificates alone, and the
surrender for transfer of any such certificate shall also constitute the
transfer of the Rights associated with the Common Shares represented thereby. In
the event that the Company purchases or acquires any Common Shares after the
Record Date but prior to the Distribution Date, any Rights associated with such
Common Shares shall be deemed cancelled and retired so that the Company shall
not be entitled to exercise any Rights associated with the Common Shares which
are no longer outstanding. One Right shall be issued with respect to each Common
Share that shall become outstanding between the Record Date and the earliest of
the Distribution Date, the Redemption Date and the Final Expiration Date.

      SECTION 4. FORM OF RIGHT CERTIFICATES. The Right Certificates (and the
forms of election to purchase Preferred Shares and of assignment to be printed
on the reverse thereof) shall be substantially the same as Exhibit B hereto and
may have such marks of identification or designation and such legends, summaries
or endorsements printed thereon as the Company may deem appropriate and as are
not inconsistent with the provisions of this Agreement, or as may be required to
comply with any applicable law or with any rule or regulation made pursuant
thereto or with any rule or regulation of any stock exchange on which the Rights
may from time to time be listed, or to conform to usage. Subject to the
provisions of Section 22 hereof, each of the Right Certificates shall entitle
the holders thereof to purchase such number of one one-hundredth of a Preferred
Shares as shall be set forth therein at the price per Preferred Share set forth
therein (the "PURCHASE PRICE"), but the number of such one one-hundredth of a
Preferred Share and the Purchase Price shall be subject to adjustment as
provided herein.

                                        8

<PAGE>


      SECTION 5. COUNTERSIGNATURE AND REGISTRATION. The Right Certificates shall
be executed on behalf of the Company by its Chairman of the Board, its Chief
Executive Officer, its President, any of its Vice Presidents, or its Treasurer,
either manually or by facsimile signature, shall have affixed thereto the
Company's seal or a facsimile thereof, and shall be attested by the Secretary or
an Assistant Secretary of the Company, either manually or by facsimile
signature. The Right Certificates shall be manually countersigned by the Rights
Agent and shall not be valid for any purpose unless countersigned. In case any
officer of the Company who shall have signed any of the Right Certificates shall
cease to be such officer of the Company before countersignature by the Rights
Agent and issuance and delivery by the Company, such Right Certificates,
nevertheless, may be countersigned by the Rights Agent and issued and delivered
by the Company with the same force and effect as though the person who signed
such Right Certificates had not ceased to be such officer of the Company; and
any Right Certificate may be signed on behalf of the Company by any person who,
at the actual date of the execution of such Right Certificate, shall be a proper
officer of the Company to sign such Right Certificate, although at the date of
the execution of this Rights Agreement any such person was not such an officer.

      Following the Distribution Date, the Rights Agent will keep or cause to be
kept, at its principal office, books for registration and transfer of the Right
Certificates issued hereunder. Such books shall show the names and addresses of
the respective holders of the Right Certificates, the number of Rights evidenced
on its face by each of the Right Certificates and the date of each of the Right
Certificates.

      SECTION 6. TRANSFER, SPLIT UP, COMBINATION, AND EXCHANGE OF RIGHT
CERTIFICATES; MUTILATED, DESTROYED, LOST, OR STOLEN RIGHT CERTIFICATES. Subject
to the provisions of Section 14 hereof, at any time after the close of business
on the Distribution Date, and at or prior to the close

                                        9

<PAGE>


of business on the earlier of the Redemption Date or the Final Expiration Date,
any Right Certificate or Right Certificates (other than Right Certificates
representing Rights that have become void pursuant to Section 11(a)(ii) hereof
or that have been exchanged pursuant to Section 24 hereof) may be transferred,
split up, combined or exchanged for another Right Certificate or Right
Certificates, entitling the registered holder to purchase a like number of one
one-hundredths of a Preferred Share as the Right Certificate or Right
Certificates surrendered then entitled such holder to purchase. Any registered
holder desiring to transfer, split up, combine or exchange any Right Certificate
or Right Certificates shall make such request in writing delivered to the Rights
Agent, and shall surrender the Right Certificate or Right Certificates to be
transferred, split up, combined, or exchanged at the principal office of the
Rights Agent. Thereupon the Rights Agent shall countersign and deliver to the
person entitled thereto a Right Certificate or Right Certificates, as the case
may be, as so requested. The Company may require payment of a sum sufficient to
cover any tax or governmental charge that may be imposed in connection with any
transfer, split up, combination, or exchange of Right Certificates.

      Upon receipt by the Company and the Rights Agent of evidence reasonably
satisfactory to them of the loss, theft, destruction, or mutilation of a Right
Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them, and, at the Company's request,
reimbursement to the Company and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Right Certificate if mutilated, the Company will make and deliver a new
Right Certificate of like tenor to the Rights Agent for delivery to the
registered holder in lieu of the Right Certificate so lost, stolen, destroyed,
or mutilated.

                                       10

<PAGE>


      SECTION 7. EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE OF RIGHTS.
(a) The registered holder of any Right Certificate may exercise the Rights
evidenced thereby (except as otherwise provided herein) in whole or in part at
any time after the Distribution Date upon surrender of the Right Certificate,
with the form of election to purchase on the reverse side thereof duly executed,
to the Rights Agent at the principal office of the Rights Agent, together with
payment of the Purchase Price for each one one-hundredth of a Preferred Share as
to which the Rights are exercised, at or prior to the earliest of (i) the close
of business on December 31, 2007 (the "FINAL EXPIRATION DATE"), (ii) the time at
which the Rights are redeemed as provided in Section 23 hereof (the "REDEMPTION
DATE"), or (iii) the time at which such Rights are exchanged as provided in
Section 24 hereof.

      (b) The Purchase Price for each one one-hundredth of a Preferred Share
pursuant to the exercise of a Right shall initially be $10.00, and shall be
subject to adjustment from time to time as provided in Sections 11 and 13 hereof
and shall be payable in lawful money of the United States of America in
accordance with Section 7(c) below.

      (c) Upon receipt of a Right Certificate representing exercisable Rights,
with the form of election to purchase duly executed, accompanied by payment of
the Purchase Price for the shares to be purchased and an amount equal to any
applicable transfer tax required to be paid by the holder of such Right
Certificate in accordance with Section 9 hereof by certified check, cashier's
check, or money order payable to the order of the Company, the Rights Agent
shall thereupon promptly (i)(A) requisition from any transfer agent of the
Preferred Shares certificates for the number of Preferred Shares to be purchased
and the Company hereby irrevocably authorizes its transfer agent to comply with
all such requests, or (B) requisition from the depositary agent depositary
receipts representing such number of one one-hundredths of a Preferred Share as
are to be purchased (in which case

                                       11

<PAGE>


certificates for the Preferred Shares represented by such receipts shall be
deposited by the transfer agent with the depositary agent) and the Company
hereby directs the depositary agent to comply with such request, (ii) when
appropriate, requisition from the Company the amount of cash to be paid in lieu
of issuance of fractional shares in accordance with Section 14 hereof, (iii)
after receipt of such certificates or depositary receipts, cause the same to be
delivered to or upon the order of the registered holder of such Right
Certificate, registered in such name or names as may be designated by such
holder and (iv) when appropriate, after receipt, deliver such cash to or upon
the order of the registered holder of such Right Certificate.

      (d) In case the registered holder of any Right Certificate shall exercise
less than all the Rights evidenced thereby, a new Right Certificate evidencing
Rights equivalent to the Rights remaining unexercised shall be issued by the
Rights Agent to the registered holder of such Right Certificate or to his duly
authorized assigns, subject to the provisions of Section 14 hereof.

      SECTION 8. CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES. All Right
Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in cancelled form,
or, if surrendered to the Rights Agent, shall be cancelled by it, and no Right
Certificates shall be issued in lieu thereof except as expressly permitted by
any of the provisions of this Rights Agreement. The Company shall deliver to the
Rights Agent for cancellation and retirement, and the Rights Agent shall so
cancel and retire, any other Right Certificate purchased or acquired by the
Company otherwise than upon the exercise thereof. The Rights Agent shall deliver
all cancelled Right Certificates to the Company, or shall, at the written
request of the Company, destroy such cancelled Right Certificates, and in such
case shall deliver a certificate of destruction thereof to the Company.

                                       12

<PAGE>


      SECTION 9. AVAILABILITY OF PREFERRED SHARES. The Company covenants and
agrees to cause to be reserved and kept available out of its authorized and
unissued Preferred Shares or any Preferred Shares held in its treasury, the
number of Preferred Shares that will be sufficient to permit the exercise in
full of all outstanding Rights in accordance with Section 7. The Company
covenants and agrees that it will take all such action as may be necessary to
ensure that all Preferred Shares delivered upon exercise of Rights shall, at the
time of delivery of the certificates for such Preferred Shares (subject to
payment of the Purchase Price), be duly and validly authorized and issued and
fully paid and nonassessable shares.

      The Company further covenants and agrees that it will pay when due and
payable any and all federal and state transfer taxes and charges which may be
payable in respect of the issuance or delivery of the Right Certificates or of
any Preferred Shares upon the exercise of Rights. The Company shall not,
however, be required to pay any transfer tax which may be payable in respect of
any transfer or delivery of Right Certificates to a Person other than, or the
issuance or delivery of certificates or depositary receipts for the Preferred
Shares in a name other than that of, the registered holder of the Right
Certificate evidencing Rights surrendered for exercise or to issue or to deliver
any certificates or depositary receipts for Preferred Shares upon the exercise
of any Rights until any such tax shall have been paid (any such tax being
payable by the holder of such Right Certificate at the time of surrender) or
until it has been established to the Company's reasonable satisfaction that no
such tax is due.

      SECTION 10. PREFERRED SHARES RECORD DATE. Each person in whose name any
certificate for Preferred Shares is issued upon the exercise of Rights shall for
all purposes be deemed to have become the holder of record of the Preferred
Shares represented thereby on, and such certificate shall be dated, the date
upon which the Right Certificate evidencing such Rights was duly surrendered and

                                       13

<PAGE>


payment of the Purchase Price (and any applicable transfer taxes) was made;
provided, however, that if the date of such surrender and payment is a date upon
which the Preferred Shares transfer books of the Company are closed, such Person
shall be deemed to have become the record holder of such shares on, and such
certificate shall be dated, the next succeeding Business Day on which the
Preferred Shares transfer books of the Company are open. Prior to the exercise
of the Rights evidenced thereby, the holder of a Right Certificate shall not be
entitled to any rights of a holder of Preferred Shares for which the Rights
shall be exercisable, including, without limitation, the right to vote, to
receive dividends or other distributions or to exercise any preemptive rights,
and shall not be entitled to receive any notice of any proceedings of the
Company, except as provided herein.

      SECTION 11. ADJUSTMENT OF PURCHASE PRICE, NUMBER OF SHARES OR NUMBER OF
RIGHTS. The Purchase Price, the number of Preferred Shares covered by each Right
and the number of Rights outstanding are subject to adjustment from time to time
as provided in this Section 11.

      (a) (i) In the event the Company shall at any time after the date of this
Agreement (A) declare a dividend on the Preferred Shares payable in Preferred
Shares, (B) subdivide the outstanding Preferred Shares, (C) combine the
outstanding Preferred Shares into a smaller number of Preferred Shares or (D)
issue any shares of its capital stock in a reclassification of the Preferred
Shares (including any such reclassification in connection with a consolidation
or merger in which the Company is the continuing or surviving corporation),
except as otherwise provided in this Section 11(a), the Purchase Price in effect
at the time of the record date for such dividend or of the effective date of
such subdivision, combination or reclassification, and the number and kind of
shares of capital stock issuable on such date, shall be proportionately adjusted
so that the holder of any Right exercised after such time shall be entitled to
receive the aggregate number and kind of shares of capital stock which, if such
Right had been exercised immediately prior to such date and at a time

                                      14

<PAGE>


when the Preferred Shares transfer books of the Company were open, he would have
owned upon such exercise and been entitled to receive by virtue of such
dividend, subdivision, combination or reclassification; provided, however, that
in no event shall the consideration to be paid upon the exercise of one Right be
less than the aggregate par value of the shares of capital stock of the Company
issuable upon exercise of one Right.

        (ii) Subject to Section 24 of this Agreement, in the event any Person
shall become an Acquiring Person, each holder of a Right shall thereafter have a
right to receive, upon exercise thereof at a price equal to the then current
Purchase Price multiplied by the number of one one-hundredths of a Preferred
Share for which a Right is then exercisable, in accordance with the terms of
this Agreement and in lieu of Preferred Shares, such number of Common Shares of
the Company as shall equal the result obtained by (x) multiplying the then
current Purchase Price by the number of one one-hundredth of a Preferred Share
for which a Right is then exercisable and dividing that product by (y) 50% of
the then current per share market price of the Company's Common Shares
(determined pursuant to Section 11(d) hereof) on the date when such Person
became an Acquiring Person. In the event that any Person shall become an
Acquiring Person and the Rights shall then be outstanding, the Company shall not
take any action which would eliminate or diminish the benefits intended to be
afforded by the Rights.

      From and after the time when a Person becomes an Acquiring Person, any
Rights that are or were acquired or beneficially owned by such Acquiring Person
(or any Associate or Affiliate of such Acquiring Person) shall be void and any
holder of such Rights shall thereafter have no right to exercise such Rights
under any provision of this Agreement. No Right Certificate shall be issued
pursuant to Section 3 that represents Rights beneficially owned by an Acquiring
Person whose Rights would be void pursuant to the preceding sentence or any
Associate or Affiliate thereof; no Right

                                       15

<PAGE>


Certificate shall be issued at any time upon the transfer of any Rights to an
Acquiring Person whose Rights would be void pursuant to the preceding sentence
or any Associate or Affiliate thereof or to any nominee of such Acquiring
Person, Associate or Affiliate; and any Right Certificate delivered to the
Rights Agent for transfer to an Acquiring Person whose Rights would be void
pursuant to the preceding sentence shall be cancelled.

            (iii) In the event that there shall not be sufficient Common Shares
issued but not outstanding or authorized but unissued to permit the exercise in
full of the Rights in accordance with the foregoing subparagraph (ii), the
Company shall take all such action as may be necessary to authorize additional
Common Shares for issuance upon exercise of the Rights. In the event the Company
shall, after good faith effort, be unable to take all such action as may be
necessary to authorize such additional Common Shares, the Company shall
substitute, for each Common Share that would otherwise be issuable upon exercise
of a Right, a number of Preferred Shares or fraction thereof such that the
current per share market price of one Preferred Share multiplied by such number
or fraction is equal to the current per share market price of one Common Share
as of the date of issuance of such Preferred Share or fraction thereof.

      (b) In case the Company shall fix a record date for the issuance of
rights, options, or warrants to all holders of Preferred Shares entitling them
(for a period expiring within 45 calendar days after such record date) to
subscribe for or purchase Preferred Shares (or shares having the same rights,
privileges, and preferences as the Preferred Shares ("EQUIVALENT PREFERRED
SHARES")) or securities convertible into Preferred Shares or equivalent
preferred shares at a price per Preferred Share or equivalent preferred share
(or having a conversion price per share, if a security convertible into
preferred shares or equivalent preferred shares) less than the then current per
share market price of the Preferred Shares (as defined in Section 11(d)) on such
record date, the Purchase Price to be

                                       16

<PAGE>


in effect after such record date shall be determined by multiplying the Purchase
Price in effect immediately prior to such record date by a fraction, the
numerator of which shall be the number of Preferred Shares outstanding on such
record date plus the number of Preferred Shares which the aggregate offering
price of the total number of Preferred Shares and/or equivalent preferred shares
so to be offered (and/or the aggregate initial conversion price of the
convertible securities so to be offered) would purchase at such current market
price and the denominator of which shall be the number of Preferred Shares
outstanding on such record date plus the number of additional Preferred Shares
and/or equivalent Preferred Shares to be offered for subscription or purchase
(or into which the convertible securities so to be offered are initially
convertible); provided, however, that in no event shall the consideration to be
paid upon the exercise of one Right be less than the aggregate par value of the
shares of capital stock of the Company issuable upon exercise of one Right. In
case such subscription price may be paid in a consideration part or all of which
shall be in a form other than cash, the value of such consideration shall be as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent.
Preferred Shares owned by or held for the account of the Company shall not be
deemed outstanding for the purpose of any such computation. Such adjustment
shall be made successively whenever such a record date is fixed; and in the
event that such rights, options, or warrants are not so issued, the Purchase
Price shall be adjusted to be the Purchase Price which would then be in effect
if such record date had not been fixed.

      (c) In case the Company shall fix a record date for the making of a
distribution to all holders of the Preferred Shares (including any such
distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend or a dividend

                                       17

<PAGE>


payable in Preferred Shares) or subscription rights or warrants (excluding those
referred to in Section 11(b) hereof), the Purchase Price to be in effect after
such record date shall be determined by multiplying the Purchase Price in effect
immediately prior to such record date by a fraction, the numerator of which
shall be the then current per share market price of the Preferred Shares on such
record date, less the fair market value (as determined in good faith by the
Board of Directors of the Company, whose determination shall be described in a
statement filed with the Rights Agent) of the portion of the assets or evidences
of indebtedness so to be distributed or of such subscription rights or warrants
applicable to one Preferred Share and the denominator of which shall be such
current per share market price of the Preferred Shares; provided, however, that
in no event shall the consideration to be paid upon the exercise of one Right be
less than the aggregate par value of the shares of capital stock of the Company
to be issued upon exercise of one Right. Such adjustments shall be made
successively whenever such a record date is fixed; and in the event that such
distribution is not so made, the Purchase Price shall again be adjusted to be
the Purchase Price which would then be in effect if such record date had not
been fixed.

      (d) (i) For the purpose of any computation hereunder, the "CURRENT PER
SHARE MARKET PRICE" of any security (a "SECURITY" for the purpose of this
Section 11(d)(i)) on any date shall be the average of the daily closing prices
per share of such Security for the 30 consecutive Trading Days (as such term is
hereinafter defined) immediately prior to such date; provided, however, that in
the event that the current per share market price of the Security is determined
during a period following the announcement by the issuer of such Security of (A)
a dividend or distribution on such Security payable in shares of such Security
or securities convertible into such shares, or (B) any subdivision, combination
or reclassification of such Security and prior to the expiration of thirty (30)
Trading Days after the ex-dividend date for such dividend or distribution, or
the record date for such

                                       18

<PAGE>


subdivision, combination or reclassification, then, and in each such case, the
current per share market price shall be appropriately adjusted to reflect the
current market price per share equivalent of such Security. The closing price
for each day shall be the last sale price, regular way, or, in case no such sale
takes place on such day, the average of the closing bid and asked prices,
regular way, in either case as reported in the principal consolidated
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange or, if the Security are not listed or
admitted to trading on the New York Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Security is listed or
admitted to trading or, if the Security are not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market,
as reported by the National Association of Securities Dealers, Inc. Automated
Quotations System ("NASDAQ") or such other system then in use, or, if on any
such date the Security is not quoted by any such organization, the average of
the closing bid and asked prices as furnished by a professional market maker
making a market in the Security selected by the Board of Directors of the
Company. The term "TRADING DAY" shall mean a day on which the principal national
securities exchange on which the Security is listed or admitted to trading is
open for the transaction of business or, if the Security is not listed or
admitted to trading on any national securities exchange, a Business Day.

      (ii) For the purpose of any computation hereunder, the "current per share
market price" of the Preferred Shares shall be determined in accordance with the
method set forth in Section 11(d)(i) of this Agreement. If the Preferred Shares
are not publicly traded, the "CURRENT PER SHARE MARKET PRICE" or the Preferred
Shares shall be conclusively deemed to be the current per share market price of
the Common Shares as determined pursuant to Section 11(d)(i) of the Agreement

                                       19

<PAGE>


(appropriately adjusted to reflect any stock split, stock dividend, or similar
transaction occurring after the date hereof), multiplied by one hundred. If
neither the Common Shares nor the Preferred Shares are publicly held or so
listed or traded, "current per share market price" shall mean the fair value per
share as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a statement filed with the Rights
Agent.

      (e) No adjustment in the Purchase Price shall be required unless such
adjustment would require an increase or decrease of at least 1% in the Purchase
Price; provided, however, that any adjustments which by reason of this Section
11(e) are not required to be made shall be carried forward and taken into
account in any subsequent adjustment. All calculations under this Section 11
shall be made to the nearest cent or to the nearest one one-millionth of a
Preferred Share or one ten-thousandth of any other share or security, as the
case may be. Notwithstanding the first sentence of this Section 11(e), any
adjustment required by this sentence of this Section 11 shall be made no later
than the earlier of (i) three years from the date of the transaction which
requires such adjustment or (ii) the date of the expiration of the right to
exercise any Rights.

      (f) If as a result of an adjustment made pursuant to Section 11(a) hereof,
the holder of any Right thereafter exercised shall become entitled to receive
any shares of capital stock of the Company other than Preferred Shares,
thereafter the number of such other shares so receivable upon exercise of any
Right shall be subject to adjustment from time to time in a manner and on terms
as nearly equivalent as practicable to the provisions with respect to the
Preferred Shares contained in Section 11(a) through 11(c), inclusive, and the
provisions of Sections 7, 9, 10 and 13 with respect to the Preferred Shares
shall apply on like terms to any such other shares.

      (g) All Rights originally issued by the Company subsequent to any
adjustment made to the Purchase Price hereunder shall evidence the right to
purchase, at the adjusted Purchase Price,

                                      20

<PAGE>


the number of one one-hundredths of a Preferred Share purchasable from time to
time hereunder upon exercise of the Rights, all subject to further adjustment as
provided herein.

      (h) Unless the Company shall have exercised its election as provided in
Section 11(i), upon each adjustment of the Purchase Price as a result of the
calculations made in Sections 11(b) and 11(c), each Right outstanding
immediately prior to the making of such adjustment shall thereafter evidence the
right to purchase, at the adjusted Purchase Price, that number of one
one-hundredth of a Preferred Share (calculated to the nearest one ten-millionth
of a Preferred Share) obtained by (i) multiplying (x) the number of one
one-hundredths of a share covered by a Right immediately prior to this
adjustment by (y) the Purchase Price in effect immediately prior to such
adjustment of the Purchase Price and (ii) dividing the product so obtained by
the Purchase Price in effect immediately after such adjustment of the Purchase
Price.

      (i) The Company may elect on or after the date of any adjustment of the
Purchase Price to adjust the number of Rights, in substitution for any
adjustment in the number of one one-hundredths of a Preferred Share purchasable
upon the exercise of a Right. Each of the Rights outstanding after such
adjustment of the number of Rights shall be exercisable for the number of one
one-hundredths of a Preferred Share for which a Right was exercisable
immediately prior to such adjustment. Each Right held of record prior to such
adjustment of the number of Rights shall become that number of Rights
(calculated to the nearest one ten-thousandth) obtained by dividing the Purchase
Price in effect immediately prior to adjustment of the Purchase Price by the
Purchase Price in effect immediately after adjustment of the Purchase Price. The
Company shall make a public announcement of its election to adjust the number of
Rights, indicating the record date for the adjustment, and, if known at the
time, the amount of the adjustment to be made. This record date may be the date
on which the Purchase Price is adjusted or any day thereafter, but, if the Right

                                       21

<PAGE>


Certificates have been issued, shall be at least 10 days later than the date of
the public announcement. If Right Certificates have been issued, upon each
adjustment of the number of Rights pursuant to this Section 11(i), the Company
shall, as promptly as practicable, cause to be distributed to holders of record
of Right Certificates on such record date Right Certificates evidencing, subject
to Section 14 hereof, the additional Rights to which such holders shall be
entitled as a result of such adjustment, or, at the option of the Company, shall
cause to be distributed to such holders of record in substitution and
replacement for the Right Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Company, new Right
Certificates evidencing all the Rights to which such holders shall be entitled
after such adjustment. Right Certificates so to be distributed shall be issued,
executed and countersigned in the manner provided for herein and shall be
registered in the names of the holders of record of Right Certificates on the
record date specified in the public announcement.

      (j) Irrespective of any adjustment or change in the Purchase Price or the
number of one one-hundredths of a Preferred Share issuable upon the exercise of
the Rights, the Right Certificates theretofore and thereafter issued may
continue to express the Purchase Price and the number of one one-hundredths of a
Preferred Share which were expressed in the initial Right Certificates issued
hereunder.

      (k) Before taking any action that would cause an adjustment reducing the
Purchase Price below one one-hundredth of the then par value, if any, of the
Preferred Shares issuable upon exercise of the Rights, the Company shall take
any corporate action which may, in the opinion of its counsel, be necessary in
order that the Company may validly and legally issue fully paid and
nonassessable Preferred Shares at such adjusted Purchase Price.

                                       22

<PAGE>


      (l) In any case in which this Section 11 shall require that an adjustment
in the Purchase Price be made effective as of a record date for a specified
event, the Company may elect to defer until the occurrence of such event the
issuing to the holder of any Right exercised after such record date of the
Preferred Shares and other capital stock or securities of the Company, if any,
issuable upon such exercise over and above the Preferred Shares and other
capital stock or securities of the Company, if any, issuable upon such exercise
on the basis of the Purchase Price in effect prior to such adjustment; provided,
however, that the Company shall deliver to such holder a due bill or other
appropriate instrument evidencing such holder's right to receive such additional
shares upon the occurrence of the event requiring such adjustment.

      (m) Anything in this Section 11 to the contrary notwithstanding, the
Company shall be entitled to make such reductions in the Purchase Price, in
addition to those adjustments expressly required by this Section 11, as and to
the extent that it in its sole discretion shall determine to be advisable in
order that any consolidation or subdivision of the Preferred Shares, issuance
wholly for cash of any Preferred Shares at less than the current market price,
issuance wholly for cash of Preferred Shares or securities which by their terms
are convertible into or exchangeable for Preferred Shares, dividends on
Preferred Shares payable in Preferred Shares or issuance of rights, options or
warrants referred to hereinabove in Section 11(b), hereafter made by the Company
to holders of its Preferred Shares shall not be taxable to such stockholders.

      (n) In the event that at any time after the date of this Agreement and
prior to the Distribution Date, the Company shall (i) declare or pay any
dividend on the Common Shares payable in Common Shares or (ii) effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise than by payment of dividends in Common Shares)
into a greater or lesser number of Common Shares, then in any such case (A) the
number of one one-hundredths of

                                       23

<PAGE>


a Preferred Share purchasable after such event upon proper exercise of each
Right shall be determined by multiplying the number of one one-hundredths of a
Preferred Share purchasable immediately prior to such event by a fraction, the
numerator of which is the number of Common Shares outstanding immediately before
such event and the denominator of which is the number of Common Shares
outstanding immediately after such event, and (B) each Common Share outstanding
immediately after such event shall have issued with respect to it that number of
Rights which each Common share outstanding immediately prior to such event had
issued with respect to it. The adjustments provided for in this Section 11(n)
shall be made successively whenever such a dividend is declared or paid or such
a subdivision, combination or consolidation is effected.

      SECTION 12. CERTIFICATE OF ADJUSTED PURCHASE PRICE OR NUMBER OF SHARES.
Whenever an adjustment is made as provided in Sections 11 and 13 hereof, the
Company shall promptly (a) prepare a certificate setting forth such adjustment,
and a brief statement of the facts accounting for such adjustment, (b) file with
the Rights Agent and with each transfer agent for the Common Shares or Preferred
Shares a copy of such certificate, and (c) mail a brief summary thereof to each
holder of a Right Certificate in accordance with Section 25 hereof.

      SECTION 13. CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR EARNING
POWER. In the event, directly or indirectly, at any time after a Person becomes
an Acquiring Person (a) the Company shall consolidate with, or merge with and
into, any other Person, (b) any Person shall consolidate with the Company, or
merge with and into the Company and the Company shall be the continuing or
surviving corporation of such merger and, in connection with such merger, all or
part of the Common Shares shall be changed into or exchanged for stock or other
securities of any other Person (or the Company) or cash or any other property,
or (c) the Company shall sell or otherwise transfer (or one or more of its
Subsidiaries shall sell or otherwise transfer), in one or more

                                       24

<PAGE>


transactions, assets or earning power aggregating 50% or more of the assets or
earning power of the Company and its Subsidiaries (taken as a whole) to any
other Person other than the Company or one or more of its wholly-owned
Subsidiaries, then, and in each such case, proper provision shall be made so
that (i) each holder of a Right (except as otherwise provided herein) shall
thereafter have the right to receive, upon the exercise thereof at a price equal
to the then current Purchase Price multiplied by the number of one
one-hundredths of a Preferred Share for which a Right is then exercisable, in
accordance with the terms of this Agreement and in lieu of Preferred Shares,
such number of Common Shares of such other Person (including the Company as
successor thereto or as the surviving corporation) as shall equal the result
obtained by (A) multiplying the then current Purchase Price by the number of one
one-hundredths of a Preferred Share for which a Right is then exercisable and
dividing that product by (B) 50% of the then current per share market price of
the Common Shares of such other Person (determined pursuant to Section 11(d)
hereof) on the date of consummation of such consolidation, merger, sale or
transfer; (ii) the issuer of such Common Shares shall thereafter be liable for,
and shall assume, by virtue of such consolidation, merger, sale or transfer, all
the obligations and duties of the Company pursuant to this Agreement; (iii) the
term "COMPANY" shall thereafter be deemed to refer to such issuer; and (iv) such
issuer shall take such steps (including, but not limited to, the reservation of
a sufficient number of its Common Shares in accordance with Section 9 hereof) in
connection with such consummation as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to the Common Shares thereafter deliverable upon, the exercise
of the Rights. The Company shall not consummate any such consolidation, merger,
sale or transfer unless prior thereto the Company and such issuer shall have
executed and delivered to the Rights Agent a supplemental agreement so
providing. The Company shall not enter into any transaction of the kind referred
to

                                       25

<PAGE>


in this Section 13 if at the time of such transaction there are any rights,
warrants, instruments or securities outstanding or any agreements or
arrangements which, as a result of the consummation of such transaction, would
eliminate or substantially diminish the benefits intended to be afforded by the
Rights. The provisions of this Section 13 shall similarly apply to successive
mergers or consolidations or sales or other transfers.

      SECTION 14. FRACTIONAL RIGHTS AND FRACTIONAL SHARES. (a) The Company shall
not be required to issue fractions of Rights or to distribute Right Certificates
which evidence fractional Rights. In lieu of such fractional Rights, there shall
be paid to the registered holders of the Right Certificates with regard to which
such fractional Rights would otherwise be issuable, an amount in cash equal to
the same fraction of the current market value of a whole Right. For the purposes
of this Section 14(a), the current market value of a whole Right shall be the
closing price of the Rights for the Trading Day immediately prior to the date on
which such fractional Rights would have been otherwise issuable. The closing
price for any day shall be the last sale price, regular way, or, in case no such
sale takes place on such day, the average of the closing bid and asked prices,
regular way, in either case as reported in the principal consolidated
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange or, if the Rights are not listed or
admitted to trading on the New York Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Rights are listed or
admitted to trading or, if the Rights are not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market
as reported by NASDAQ or such other system then in use or, if on any such date
the Rights are not quoted by any such organization, the average of the closing
bid and asked prices as furnished by a professional

                                       26

<PAGE>


market maker making a market in the Rights selected by the Board of Directors of
the Company. If on any such date no such market maker is making a market in the
Rights, the fair value of the Rights on such date as determined in good faith by
the Board of Directors of the Company shall be used.

      (b) The Company shall not be required to issue fractions of Preferred
Shares (other than fractions which are integral multiples of one one-hundredth
of a Preferred Share) upon exercise of the Rights or to distribute certificates
which evidence fractional Preferred Shares (other than fractions which are
integral multiples of one one-hundredth of Preferred Share). Fractions of
Preferred Shares in integral multiples of one one-hundredth of a Preferred Share
may, at the election of the Company, be evidenced by depositary receipts,
pursuant to an appropriate agreement between the Company and a depositary
selected by it; provided, that such agreement shall provide that the holders of
such depositary receipts shall have all the rights, privileges and preferences
to which they are entitled as beneficial owners of the Preferred Shares
represented by such depositary receipts.In lieu of fractional Preferred Shares
that are not integral multiples of one one-hundredths of Preferred Share, the
Company shall pay to the registered holders of Right Certificates at the time
such Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of one Preferred Share. For the purposes of
this Section 14(b), the current market value of a Preferred Share shall be the
closing price of a Preferred Share (as determined pursuant to the second
sentence of Section 11(d)(i) hereof) for the Trading Day immediately prior to
the date of such exercise.

      (c) The holder of a Right by the acceptance of the Right expressly waives
his right to receive any fractional Rights or any fractional shares upon
exercise of a Right (except as provided above).

                                       27

<PAGE>


      SECTION 15. RIGHTS OF ACTION. All rights of action in respect of this
Agreement, excepting the rights of action given to the Rights Agent under
Section 18 hereof, are vested in the respective registered holders of the Right
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares); and any registered holder of any Right Certificate (or, prior to
the Distribution Date, of the Common Shares), without the consent of the Rights
Agent or of the holder of any other Right Certificate (or, prior to the
Distribution Date, of the Common Shares), may, in his own behalf and for his own
benefit, enforce, and may institute and maintain any suit, action or proceeding
against the Company to enforce, or otherwise act in respect of, his right to
exercise the Rights evidenced by such Right Certificate in the manner provided
in such Right Certificate and in this Agreement. Without limiting the foregoing
or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and will be entitled to specific performance of
the obligations under, and injunctive relief against actual or threatened
violations of the obligations of any Person subject to, this Agreement.

      SECTION 16. AGREEMENT OF RIGHT HOLDERS. Every holder of a Right, by
accepting the same, consents and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

      (a) prior to the Distribution Date, the Rights will be transferable only
in connection with the transfer of the Common Shares;

      (b) after the Distribution Date, the Right Certificates are transferable
only on the registry books of the Rights Agent if surrendered at the principal
office of the Rights Agent, duly endorsed or accompanied by a proper instrument
of transfer; and

                                       28

<PAGE>


      (c) the Company and the Rights Agent may deem and treat the Person in
whose name the Right Certificate (or, prior to the Distribution Date, the
associated Common Shares certificate) is registered as the absolute owner
thereof and of the Rights evidenced thereby (notwithstanding any notations of
ownership or writing on the Right Certificates or the associated Common Shares
certificate made by anyone other than the Company or the Rights Agent) for all
purposes whatsoever, and neither the Company nor the Rights Agent shall be
affected by any notice to the contrary.

      SECTION 17. RIGHT CERTIFICATE HOLDER NOT DEEMED A STOCKHOLDER. No holder,
as such, of any Right Certificate shall be entitled to vote, receive dividends,
or be deemed for any purpose the holder of the Preferred Shares or any other
securities of the Company which may at any time be issuable on the exercise of
the Rights represented thereby, nor shall anything contained herein or in any
Right Certificate be construed to confer upon the holder of any Right
Certificate, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
stockholders (except as provided in Section 25 hereof), or to receive dividends
or subscription rights, or otherwise, until the Right or Rights evidenced by
such Right Certificate shall have been exercised in accordance with the
provisions hereof.

      SECTION 18. CONCERNING THE RIGHTS AGENT. The Company agrees to pay to the
Rights Agent reasonable compensation for all services rendered by it hereunder
and, from time to time, on demand of the Rights Agent, its reasonable expenses
and counsel fees and other disbursements incurred in the administration and
execution of this Agreement and the exercise and performance of its duties
hereunder. The Company also agrees to indemnify the Rights Agent for, and to
hold it harmless against, any loss, liability, or expense, incurred without
negligence, bad faith or willful misconduct

                                      29

<PAGE>


on the part of the Rights Agent, for anything done or omitted by the Rights
Agent in connection with the acceptance and administration of this Agreement,
including the costs and expenses of defending against any claim of liability in
the premises.

      The Rights Agent shall be protected and shall incur no liability for, or
in respect of any action taken, suffered or omitted by it in connection with,
its administration of this Agreement in reliance upon any Right Certificate or
certificate for the Preferred Shares or Common Shares or for other securities of
the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement, or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
person or persons, or otherwise upon the advice of counsel as set forth in
Section 20 hereof.

      SECTION 19. MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT. Any
corporation into which the Rights Agent or any successor Rights Agent may be
merged or with which it may be consolidated, or any corporation resulting from
any merger or consolidation to which the Rights Agent or any successor Rights
Agent shall be a party, or any corporation succeeding to the stock transfer or
corporate trust business of the Rights Agent or any successor Rights Agent,
shall be the successor to the Rights Agent under this Agreement without the
execution or filing of any paper or any further act on the part of any of the
parties hereto, provided that such corporation would be eligible for appointment
as a successor Rights Agent under the provisions of Section 21 hereof. In case
at the time such successor Rights Agent shall succeed to the agency created by
this Agreement any of the Right Certificates shall have been countersigned but
not delivered, any such successor Rights Agent may adopt the countersignature of
the predecessor Rights Agent and deliver such Right Certificates so
countersigned; and in case at that time any of the Right

                                      30

<PAGE>


Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Right Certificates either in the name of the predecessor Rights
Agent or in the name of the successor Rights Agent; and in all such cases such
Right Certificates shall have the full force provided in the Right Certificates
and in this Agreement.

      In case at any time the name of the Rights Agent shall be changed and at
such time any of the Right Certificates shall have been countersigned but not
delivered, the Rights Agent may adopt the countersignature under its prior name
and deliver Right Certificates so countersigned; and in case at that time any of
the Right Certificates shall not have been countersigned, the Rights Agent may
countersign such Right Certificates either in its prior name or in its changed
name; and in all such cases such Right Certificates shall have the full force
provided in the Right Certificates and in this Agreement.

      SECTION 20. DUTIES OF RIGHTS AGENT. The Rights Agent undertakes the duties
and obligations imposed by this Agreement upon the following terms and
conditions, by all of which the Company and the holders of Right Certificates,
by their acceptance thereof, shall be bound:

      (a) The Rights Agent may consult with legal counsel (who may be legal
counsel for the Company), and the opinion of such counsel shall be full and
complete authorization and protection to the Rights Agent as to any action taken
or omitted by it in good faith and in accordance with such opinion.

      (b) Whenever in the performance of its duties under this Agreement the
Rights Agent shall deem it necessary or desirable that any fact or matter be
proved or established by the Company prior to taking or suffering any action
hereunder, such fact or matter (unless other evidence in respect thereof be
herein specifically prescribed) may be deemed to be conclusively proved and
established by a certificate signed by any one of the Chairman of the Board, the
Chief Executive

                                      31

<PAGE>


Officer, the President, any Vice President, the Treasurer or the Secretary of
the Company and delivered to the Rights Agent; and such certificate shall be
full authorization to the Rights Agent for any action taken or suffered in good
faith by it under the provisions of this Agreement in reliance upon such
certificate.

      (c) The Rights Agent shall be liable hereunder to the Company and any
other Person only for its own negligence, bad faith or willful misconduct.
Anything to the contrary notwithstanding, in no event shall the Rights Agent be
liable for special, indirect, consequential or incidental loss or damage of any
kind whatsoever (including but not limited to lost profits), even if the Rights
Agent has been advised of the likelihood of such loss or damage.

      (d) The Rights Agent shall not be liable for or of any reason of any of
the statements of fact or recitals contained in this Agreement or in the Right
Certificates (except its countersignature thereof) or be required to verify the
same, but all such statements and recitals are and shall be deemed to have been
made by the Company only.

      (e) The Rights Agent shall not be under any responsibility in respect of
the validity of this Agreement or the execution and delivery hereof (except the
due execution hereof by the Rights Agent) or in respect of the validity or
execution of any Right Certificate (except its countersignature thereof); nor
shall it be responsible for any breach by the Company of any covenant or
condition contained in this Agreement or in any Right Certificate; nor shall it
be responsible for any change in the exercisability of the Rights (including the
Rights becoming void pursuant to Section 11(a)(ii) hereof) or any adjustment in
the terms of the Rights (including the manner, method or amount thereof)
provided for in Sections 3, 11, 13, 23 or 24, or the ascertaining of the
existence of facts that would require any such change or adjustment (except with
respect to the exercise of Rights evidenced by Right Certificates after actual
notice that such change or adjustment is required); nor shall it by

                                       32

<PAGE>


any act hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any Preferred Shares to be issued pursuant to
this Agreement or any Right Certificate or as to whether any Preferred Shares
will, when issued, be validly authorized and issued, fully paid and
nonassessable.

      (f) The Company agrees that it will perform, execute, acknowledge and
deliver or cause to be performed, executed, acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying out or performing by the Rights Agent of
the provisions of this Agreement.

      (g) The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the Chief Executive Officer, the President,
any Vice President, the Secretary or the Treasurer of the Company, and to apply
to such officers for advice or instructions in connection with its duties, and
it shall not be liable for any action taken or suffered by it in good faith in
accordance with instructions of any such officer or for any delay in acting
while waiting for those instructions.

      (h) The Rights Agent and any stockholder, director, officer or employee of
the Rights Agent may buy, sell or deal in any of the Rights or other securities
of the Company or become pecuniarily interested Company or become pecuniarily
interested in any transaction in which the Company may be interested, or
contract with or lend money to the Company or otherwise act as fully and freely
as though it were not Rights Agent under this Agreement. Nothing herein shall
preclude the Rights Agent from acting in any other capacity for the Company or
for any other legal entity.
      (i) The Rights Agent may execute and exercise any of the rights or powers
hereby vested in it or perform any duty hereunder either itself or by or through
its attorneys or agents, and the

                                       33

<PAGE>


Rights Agent shall not be answerable or accountable for any act, default,
neglect or misconduct of any such attorneys or agents or for any loss to the
Company resulting from any such act, default, neglect or misconduct, provided
reasonable care was exercised in the selection and continued employment thereof.

      SECTION 21. CHANGE OF RIGHTS AGENT. The Rights Agent or any successor
Rights Agent may resign and be discharged from its duties under this Agreement
upon 30 days' notice in writing mailed to the Company and to each transfer agent
of the Common Shares or Preferred Shares by registered or certified mail, and to
the holders of the Right Certificates by first-class mail. The Company may
remove the Rights Agent or any successor Rights Agent upon 30 days' notice in
writing, mailed to the Rights Agent or successor Rights Agent, as the case may
be, and to each transfer agent of the Common Shares or Preferred Shares by
registered or certified mail, and to the holders of the Right Certificates by
first-class mail. If the Rights Agent shall resign or be removed or shall
otherwise become incapable of acting, the Company shall appoint a successor to
the Rights Agent. If the Company shall fail to make such appointment within a
period of 30 days after giving notice of such removal or after it has been
notified in writing of such resignation or incapacity by the resigning or
incapacitated Rights Agent or by the holder of a Right Certificate (who shall,
with such notice, submit his Right Certificate for inspection by the Company),
then the registered holder of any Right Certificate may apply to any court of
competent jurisdiction for the appointment of a new Rights Agent. Any successor
Rights Agent, whether appointed by the Company or by such a court, shall be
either (A) a corporation organized and doing business under the laws of the
United States or of the State of California (or of any other state of the United
States so long as such corporation is authorized to do business as a banking
institution in the State of California), in good standing, having an office in
the State of California, which is authorized under such laws to exercise

                                       34

<PAGE>


corporate trust or stock transfer powers and is subject to supervision or
examination by federal or state authority and which has at the time of its
appointment as Rights Agent a combined capital and surplus of at least $50
million or (B) an affiliate of such a corporation. After appointment, the
successor Rights Agent shall be vested with the same powers, rights, duties and
responsibilities as if it had been originally named as Rights Agent without
further act or deed; but the predecessor Rights Agent shall deliver and transfer
to the successor Rights Agent any property at the time held by it hereunder, and
execute and deliver any further assurance, conveyance, act or deed necessary for
the purpose. Not later than the effective date of any such appointment the
Company shall file notice thereof in writing with the predecessor Rights Agent
and each transfer agent of the Common Shares or Preferred Shares, and mail a
notice thereof in writing to the registered holders of the Right Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the-resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent, as
the case may be.

      SECTION 22. ISSUANCE OF NEW RIGHT CERTIFICATES. Notwithstanding any of the
provisions of this Agreement or of the Rights to the contrary, the Company may,
at its option, issue new Right Certificates evidencing Rights in such form as
may be approved by its Board of Directors to reflect any adjustment or change in
the Purchase Price and the number or kind or class of shares or other securities
or property purchasable under the Right Certificates made in accordance with the
provisions of this Agreement.

      SECTION 23. REDEMPTION. (a) The Board of Directors of the Company may, at
its option, at any time prior to such time as any Person becomes an Acquiring
Person, redeem all but not less than all the then-outstanding Rights at a
redemption price of $.01 per Right, appropriately adjusted to reflect any stock
split, stock dividend or similar transaction occurring after the date hereof
(such

                                       35

<PAGE>


redemption price being hereinafter referred to as the "REDEMPTION PRICE"). The
redemption of the Rights by the Board of Directors may be made effective at such
time on such basis and with such conditions as the Board of Directors in its
sole discretion may establish.

      (b) Immediately upon the action of the Board of Directors of the Company
ordering the redemption of the Rights pursuant to Section 23 of this Agreement,
and without further action and without any notice, the right to exercise the
Rights will terminate and the only right thereafter of the holders of Rights
shall be to receive the Redemption Price. The Company shall promptly give public
notice of any such redemption; provided, however, that the failure to give, or
any defect in, any such notice shall not affect the validity of such redemption.
Within 10 days after such action of the Board of Directors ordering the
redemption of the Rights, the Company shall mail a notice of redemption to all
the holders of the then-outstanding Rights at their last addresses as they
appear upon the registry books of the Rights Agent or, prior to the Distribution
Date, on the registry books of the transfer agent for the Common Shares. Any
notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice. Each such notice of redemption
will state the method by which the payment of the Redemption Price will be made.
Neither the Company nor any of its Affiliates or Associates may redeem, acquire
or purchase for value any Rights at any time in any manner other than that
specifically set forth in this Section 23 or in Section 24 hereof, and other
than in connection with the purchase of Common Shares prior to the Distribution
Date.

      SECTION 24. EXCHANGE. (a) The Board of Directors of the Company may, at
its option, at any time after any Person becomes an Acquiring Person, exchange
all or part of the then-outstanding and exercisable Rights (which shall not
include Rights that have become void pursuant to the provisions of Section
11(a)(ii) hereof) for Common Shares at an exchange ratio of one Common Share

                                       36

<PAGE>


per Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such exchange ratio being
hereinafter referred to as the "EXCHANGE RATIO"). Notwithstanding the foregoing,
the Board of Directors shall not be empowered to effect such exchange at any
time after any Person (other than the Company, any Subsidiary of the Company,
any employee benefit plan of the Company or any such Subsidiary, or any entity
holding Common Shares for or pursuant to the terms of any such plan), together
with all Affiliates and Associates of such Person, becomes the Beneficial Owner
of 50% or more of the Common Shares then-outstanding.

      (b) Immediately upon the action of the Board of Directors of the Company
ordering the exchange of any Rights pursuant to Section 24(a) of this Agreement
and without any further action and without any notice, the right to exercise
such Rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of Common Shares equal to the number of
such Rights held by such holder multiplied by the Exchange Ratio. The Company
shall promptly give public notice of any such exchange; provided, however, that
the failure to give, or any defect in, such notice shall not affect the validity
of such exchange. The Company promptly shall mail a notice of any such exchange
to all of the holders of such Rights at their last addresses as they appear upon
the registry books of the Rights Agent. Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the
notice. Each such notice of exchange will state the method by which the exchange
of the Common Shares for Rights will be effected and, in the event of any
partial exchange, the number of Rights which will be exchanged. Any partial
exchange shall be effected pro rata based on the number of Rights (other than
Rights which have become void pursuant to the provisions of Section 11(a)(ii)
hereof) held by each holder of Rights.

                                       37

<PAGE>


      (c) In the event that there shall not be sufficient Common Shares issued
but not outstanding or authorized but unissued to permit any exchange of Rights
as contemplated in accordance with this Section 24, the Company shall take all
such action as may be necessary to authorize additional Common Shares for
issuance upon exchange of the Rights. In the event the Company shall, after good
faith effort, be unable to take all such action as may be necessary to authorize
such additional Common Shares, the Company shall substitute, for each Common
Share that would otherwise be issuable upon exchange of a Right, a number of
Preferred Shares or fraction thereof such that the current per share market
price of one Preferred Share multiplied by such number or fraction is equal to
the current per share market price of one Common Share as of the date of
issuance of such Preferred Shares or fraction thereof.

      (d) The Company shall not be required to issue fractions of Common Shares
or to distribute certificates which evidence fractional Common Shares. In lieu
of such which fractional Common Shares, the Company shall pay to the registered
holders of the Right Certificates with regard to which such fractional Common
Shares would otherwise be issuable an amount in cash equal to the same fraction
of the current market value of a whole Common Share. For the purposes of this
Section 24(d), the current market value of a whole Common Share shall be the
closing price of a Common Share (as determined pursuant to the second sentence
of Section 11(d) hereof) for the Trading Day immediately prior to the date of
exchange pursuant to this Section 24.

      SECTION 25. NOTICE OF CERTAIN EVENTS. (a) In case the Company shall
propose (i) to pay any dividend payable in stock of any class to the holders of
its Preferred Shares or to make any other distribution to the holders of its
Preferred Shares (other than a regular quarterly cash dividend), (ii) to offer
to the holders of its Preferred Shares rights or warrants to subscribe for or to
purchase any additional Preferred Shares or shares of stock of any class or any
other securities, rights or options,

                                      38

<PAGE>


(iii) to effect any reclassification of its Preferred Shares (other than a
reclassification involving only the subdivision of outstanding Preferred
Shares), (iv) to effect any consolidation or merger into or with, or to effect
any sale or other transfer (or to permit one or more of its Subsidiaries to
effect any sale or other transfer), in one or more transactions, of 50% or more
of the assets or earning power of the Company and its Subsidiaries (taken as a
whole) to, any other Person, (v) to effect the liquidation, dissolution or
winding up of the Company, or (vi) to declare or pay any dividend on the Common
Shares payable in Common Shares or to effect a subdivision, combination, or
consolidation of the Common Shares (by reclassification or otherwise than by
payment of dividends in Common Shares), then, in each such case, the Company
shall give to each holder of a Right Certificate, in accordance with Section 26
hereof, a notice of such proposed action, which shall specify the record date
for the purposes of such stock dividend, or distribution of rights or warrants,
or the date on which such reclassification, consolidation, merger, sale,
transfer, liquidation, dissolution, or winding up is to take place and the date
of participation therein by the holders of the Common Shares and/or Preferred
Shares, if any such date is to be fixed, and such notice shall be so given in
the case of any action covered by clause (i) or (ii) above at least 10 days
prior to the record date for determining holders of the Preferred Shares for
purposes of such action, and in the case of any such other action, at least 10
days prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the Common Shares and/or Preferred
Shares, whichever shall be the earlier.

      (b) In case any of the events set forth in Section 11(a)(ii) hereof shall
occur, then the Company shall as soon as practicable thereafter give to each
holder of a Right Certificate, in accordance with Section 26 hereof, a notice of
the occurrence of such event, which notice shall describe such event and the
consequences of such event to holders of Rights under Section 11(a)(ii) hereof.

                                       39

<PAGE>


      SECTION 26. NOTICES. Notices or demands authorized by this Agreement to be
given or made by the Rights Agent or by the holder of any Right Certificate to
or on the Company shall be sufficiently given or made if sent by first-class
mail postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                        Ophthalmic Imaging Systems
                        221 Lathrop Way, Suite I
                        Sacramento, California 95815
                        Attention:  Corporate Secretary

Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made by the Company or by the holder of any
Right Certificate to or on the Rights Agent shall be sufficiently given or made
if sent by first-class mail, postage prepaid, addressed (until another address
is filed in writing with the Company) as follows:

                        American Scientific Transfer, Inc.
                        938 Quail Street, Suite 101
                        Lakewood, Colorado 80215
                        Attention:  John Harmann

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Right Certificate shall be
sufficiently given or made if sent by first-class mail, postage prepaid,
addressed to such holder at the address of such holder as shown on the registry
books of the Company.

      SECTION 27. SUPPLEMENTS AND AMENDMENTS. The Company may from time to time
supplement or amend this Agreement without the approval of any holders of Right
Certificates in order to cure any ambiguity, to correct or supplement and
provision contained herein which may be defective or inconsistent with any other
provisions herein, or to make any other provisions with respect to the Rights
which the Company may deem necessary or desirable including without limitation
the definition of Acquiring Person, any such supplement or amendment to be
evidenced

                                       40

<PAGE>


by a writing signed by the Company and the Rights Agent; provided, however, that
from and after such time as any Person becomes an Acquiring Person, this
Agreement shall not be amended in any manner which would adversely affect the
interests of the holders of Rights.

      SECTION 28. SUCCESSORS. All the covenants and provisions of this Agreement
by or for the benefit of the Company or the Rights Agent shall bind and inure to
the benefit of their respective successors and assigns hereunder.

      SECTION 29. BENEFITS OF THIS AGREEMENT. Nothing in this Agreement shall be
construed to give to any person or corporation other than the Company, the
Rights Agent and the registered holders of the Right Certificates (and, prior to
the Distribution Date, the Common Shares) any legal or equitable right, remedy
or claim under this Agreement; but this Agreement shall be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the Right Certificates (and, prior to the Distribution Date, the Common Shares).

      SECTION 30. SEVERABILITY. If any term, provision, covenant, or restriction
of this Agreement is held by a court of competent jurisdiction or other
authority to be invalid, void or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in full
force and effect and shall in no way be affected, impaired, or invalidated.

      SECTION 31. GOVERNING LAW. This Agreement and each Right Certificate
issued hereunder shall be deemed to be a contract made under the laws of the
State of California and for all purposes shall be governed by and construed in
accordance with the laws of the State of California applicable to contracts to
be made and performed entirely within the State of California.

      SECTION 32. COUNTERPARTS. This Agreement may be executed in any number of
counterparts and each of such counterparts shall for all purposes be deemed to
be an original, and all such counterparts shall together constitute but one and
the same instrument.

                                       41

<PAGE>


      SECTION 33. DESCRIPTIVE HEADINGS. Descriptive headings of the several
Sections of this Agreement are inserted for convenience only and shall not
control or affect the meaning or construction of any of the provisions hereof.

                     [Remainder of Page Intentionally Blank]

                                       42

<PAGE>


      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and attested, effective as of the day and year first above
written.



                                    OPHTHALMIC IMAGING SYSTEMS

Attest:


By:/s/ STEVEN C. LAGORIO            By:/s/ STEVEN R. VERDOONER
   -----------------------------       ------------------------------
   Title: Director of Finance          Title: Chief Executive Officer



                                    AMERICAN SECURITIES TRANSFER, INC.



Attest:

By: /s/ STEPHEN KING                 By: /s/ KELLIE GWINN
   -------------------------------      -----------------------------
   Title: Executive Vice President      Title: Senior Vice President


                                       43

<PAGE>


                                   EXHIBIT A

                                     FORM
                                      OF
                        CERTIFICATE OF DETERMINATION OF
                                  PREFERENCES
                                      OF
                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK
                                      OF
                          OPHTHALMIC IMAGING SYSTEMS

                        (Pursuant to Section 401 of the
                      California General Corporation Law)

                    -----------------------------------------

      The undersigned, Steven R. Verdooner, certifies that (1) he is the duly
elected and acting Chief Executive Officer and Secretary of Ophthalmic Imaging
Systems, a corporation organized and existing under the General Corporation Law
of the State of California (hereinafter called the "Corporation"), and (2) under
authority given by the Corporation's Certificate of Incorporation, the Board of
Directors has duly adopted the following recitals and resolutions:

      WHEREAS, the Articles of Incorporation of the Corporation provided for a
class of shares known as Preferred Stock, issuable from time to time in one or
more series; and

      WHEREAS, the Board of Directors of the Corporation is authorized to
determine or alter the rights, preferences, privileges, and restrictions granted
to or imposed on any wholly unissued series of Preferred Stock, to fix the
number of shares constituting any such series, and to determine the designation
thereof, or any of them; and

      WHEREAS, the Corporation has not issued any shares of such Preferred Stock
and the Board of Directors of the Corporation desires to determine the rights,
preferences, privileges, and restriction relating to this initial series of
Preferred Stock, and the number of shares constituting and the designation of
said series;

      NOW, THEREFORE, BE IT RESOLVED, that the Board of Directors hereby
determines the designation of, number of shares constituting, and the rights,
preferences, privileges, and restrictions relating to said series of Preferred
Stock as follows:

      SECTION 1. DESIGNATION AND AMOUNT. The shares of such series shall be
designated as "Series A Junior Participating Preferred Stock" (the "Series A
Preferred Stock") and the number of shares constituting the Series A Preferred
Stock shall be 100,000. Such number of shares may be increased or decreased by
resolution of the Board of Directors; provided, that no decrease shall reduce
the number of shares of Series A Preferred Stock to a number less than the
number of shares then-outstanding plus the number of shares reserved for
issuance upon the exercise of outstanding options, rights, or warrants or upon
the conversion of any outstanding securities issued by the Corporation
convertible into Series A Preferred Stock.

                                       A-1

<PAGE>


      SECTION 2.  DIVIDENDS AND DISTRIBUTIONS.

      (A) Subject to the rights of the holders of any shares of any series of
Preferred Stock (or any similar stock) ranking prior and superior to the Series
A Preferred Stock with respect to dividends, the holders of shares of Series A
Preferred Stock, in preference to the holders of Common Stock, no par value per
share (the "Common Stock"), of the Corporation, and of any other junior stock,
shall be entitled to receive, when, as and if declared by the Board of Directors
out of funds legally available for the purpose, quarterly dividends payable in
cash on the first day of November, February, May and August in each year (each
such date being referred to herein as a "Quarterly Dividend Payment Date"),
commencing on the first Quarterly Dividend Payment Date after the first issuance
of a share or fraction of a share of Series A Preferred Stock, in an amount per
share (rounded to the nearest cent) equal to the greater of (a) $1.00 or (b)
subject to the provision for adjustment hereinafter set forth, 100 times the
aggregate per share amount of all cash dividends, and 100 times the aggregate
per share amount (payable in kind) of all non-cash dividends or other
distributions, other than a dividend payable in shares of Common Stock or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock since the immediately preceding
Quarterly Dividend Payment Date or, with respect to the first Quarterly Dividend
Payment Date, since the first issuance of any share or fraction of a share of
Series A Preferred Stock. In the event the Corporation shall at any time declare
or pay any dividend on the Common Stock payable in shares of Common Stock, or
effect a subdivision or combination or consolidation of the outstanding shares
of Common Stock (by reclassification or otherwise than by payment of a dividend
in shares of Common Stock) into a greater or lesser number of shares of Common
Stock, then in each such case the amount to which holders of shares of Series A
Preferred Stock were entitled immediately prior to such event under clause (b)
of the preceding sentence shall be adjusted by multiplying such amount by a
fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

      (B) The Corporation shall declare a dividend or distribution on the Series
A Preferred Stock as provided in paragraph (A) of this Section immediately after
it declares a dividend or distribution on the Common Stock (other than a
dividend payable in shares of Common Stock); provided that, in the event no
dividend or distribution shall have been declared on the Common Stock during the
period between any Quarterly Dividend Payment Date and the next subsequent
Quarterly Dividend Payment Date, a dividend of $1.00 per share on the Series A
Preferred Stock shall nevertheless be payable on such subsequent Quarterly
Dividend Payment Date.

      (C) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares, unless the date of issue of such
shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which case dividends on such shares shall begin to accrue from the date
of issue of such shares, or unless the date of issue is a Quarterly Dividend
Payment Date or is a date after the record date for the determination of holders
of shares of Series A Preferred Stock entitled to receive a quarterly dividend
and before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date. Accrued but unpaid dividends shall not bear interest. Dividends
paid on the shares of Series A Preferred Stock in an amount less than the total
amount of such dividends at the time

                                       A-2

<PAGE>


accrued and payable on such shares shall be allocated pro rata on a
share-by-share basis among all such shares at the time outstanding. The Board of
Directors may fix a record date for the determination of holders of shares of
Series A Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be not more then 60 days
prior to the date fixed for the payment thereof.

      SECTION 3. VOTING RIGHTS. The holders of shares of Series A Preferred
Stock shall have the following voting rights:

      (A) Subject to the provision for adjustment hereinafter set forth, each
share of Series A Preferred Stock shall entitle the holder thereof to 100 votes
on all matters submitted to a vote of the stockholders of the Corporation. In
the event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Series A
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

      (B) Except as otherwise provided herein, in any other Certificate of
Determination creating a series of Preferred Stock or any similar stock, or by
law, the holders of shares of Series A Preferred Stock and the holders of shares
of Common Stock and any other capital stock of the Corporation having general
voting rights shall vote together as one class on all matters submitted to a
vote of stockholders of the Corporation.

      (C) Except as set forth herein, or as otherwise provided by law, holders
of Series A Preferred Stock shall have no special voting rights and their
consent shall not be required (except to the extent they are entitled to vote
with holders of Common Stock as set forth herein) for taking any corporate
action.

      SECTION 4.  CERTAIN RESTRICTIONS.

      (A) Whenever quarterly dividends or other dividends or distributions
payable on the Series A Preferred Stock as provided in Section 2 are in arrears,
thereafter and until all accrued and unpaid dividends and distributions, whether
or not declared, on shares of Series A Preferred Stock outstanding shall have
been paid in full, the Corporation shall not:

            (i) declare or pay dividends, or make any other distributions, on
      any shares of stock ranking junior (either as to dividends or upon
      liquidation, dissolution or winding up) to the Series A Preferred Stock;

            (ii) declare or pay dividends, or make any other distributions, on
      any shares of stock ranking on a parity (either as to dividends or upon
      liquidation, dissolution, or winding up) with the Series A Preferred
      Stock, except dividends paid ratably on

                                       A-3

<PAGE>


      the Series A Preferred Stock and all such parity stock on which dividends
      are payable or in arrears in proportion to the total amounts to which the
      holders of all such shares are then entitled;

            (iii) redeem or purchase or otherwise acquire for consideration
      shares of any stock ranking junior (either as to dividends or upon
      liquidation, dissolution or winding up) to the Series A Preferred Stock,
      provided that the Corporation may at any time redeem, purchase, or
      otherwise acquire shares of any such junior stock in exchange for shares
      of any stock of the Corporation ranking junior (either as to dividends or
      upon dissolution, liquidation, or winding up) to the Series A Preferred
      Stock; or

            (iv) redeem or purchase or otherwise acquire for consideration any
      shares of Series A Preferred Stock, or any shares of stock ranking on a
      parity with the Series A Preferred Stock, except in accordance with a
      purchase offer made in writing or by publication (as determined by the
      Board of Director) to all holders of such shares upon such terms as the
      Board of Directors, after consideration of the respective annual dividend
      rates and other relative rights and preferences of the respective series
      and classes, shall determine in good faith will result in fair and
      equitable treatment among the respective series or classes.

      (B) The Corporation shall not permit any subsidiary of the Corporation to
purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

      SECTION 5. REACQUIRED SHARES. Any shares of Series A Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and cancelled promptly after the acquisition thereof. All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Articles of Incorporation, or in any other Certificate of Determination creating
a series of Preferred Stock or any similar stock or as otherwise required by
law.

      SECTION 6. LIQUIDATION, DISSOLUTION, OR WINDING UP. Upon any liquidation,
dissolution, or winding up of the Corporation, no distribution shall be made (1)
to the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution, or winding up) to the Series A Preferred Stock unless,
prior thereto, the holders of shares of Series A Preferred Stock shall have
received $100 per share, plus an amount equal to accrued and unpaid dividends
and distributions thereon, whether or not declared, to the date of such payment,
provided that the holders of shares of Series A Preferred Stock shall be
entitled to receive an aggregate amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 100 times the aggregate amount to be
distributed per share to holders of shares of Common Stock, or (2) to the
holders of shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution, or winding up) with the Series A Preferred Stock,
except distributions made ratably on the Series A Preferred Stock and all such
parity stock in proportion to the total amounts to which the holders of all such
shares are

                                       A-4

<PAGE>


entitled upon such liquidation, dissolution, or winding up. In the event the
Corporation shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification of
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such case the
aggregate amount to which holders of shares of Series A Preferred Stock were
entitled immediately prior to such event under the proviso in clause (1) of the
preceding sentence shall be adjusted by multiplying such amount by a fraction
the numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

      SECTION 7. CONSOLIDATION, MERGER, ETC. In case the Corporation shall enter
into any consolidation, merger, combination, or other transaction in which the
shares of Common Stock are exchanged for or changed into other stock,
securities, cash and/or any other property, then in any such case each share of
Series A Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 100 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series A Preferred Stock shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

      SECTION 8. NO REDEMPTION. The shares of Series A Preferred Stock shall not
be redeemable.

      SECTION 9. RANK. The Series A Preferred Stock shall rank, with respect to
the payment of dividends and the distribution of assets, junior to all series of
any other class of the Corporation's Preferred Stock.

      SECTION 10. AMENDMENT. The Articles of Incorporation of the Corporation
shall not be amended in any manner which would materially alter or change the
powers, preferences or special rights of the Series A Preferred Stock so as to
affect them adversely without the affirmative vote of the holders of at least
two-thirds of the outstanding shares of Series A Preferred Stock, voting
together as a single class.

                                    A-5

<PAGE>


      The undersigned Steven R. Verdooner, Chief Executive Officer, and
Secretary of Ophthalmic Imaging Systems, declares under penalty of perjury under
the laws of the State of California that the matters set out in the foregoing
Certificate are true of his own knowledge.

      Executed at Sacramento, California, on January 2, 1998.

                              
                              ---------------------------------------------
                              Name: Steven R. Verdooner,
                              Title: Chief Executive Officer and Secretary


                                       A-6

<PAGE>


                                   EXHIBIT B

                           FORM OF RIGHT CERTIFICATE
Certificate No. R-                                             ________ Rights

      NOT EXERCISABLE AFTER DECEMBER 31, 2007, OR EARLIER IF
      REDEMPTION OR EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT TO
      REDEMPTION AT $.01 PER RIGHT AND TO EXCHANGE ON THE TERMS
      SET FORTH IN THE RIGHTS AGREEMENT.

                               Right Certificate

                          OPHTHALMIC IMAGING SYSTEMS

      This certifies that_______________ , or registered assigns, is the
registered owner of the number set forth above, each of which entitles the owner
thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated effective as of December 31, 1997 (the "Rights Agreement"),
between Ophthalmic Imaging Systems, a California corporation (the "Company"),
and American Securities Transfer, Inc., (the "Rights Agent"), to purchase from
the Company at any time after the Distribution Date (as such term is defined in
the Rights Agreement) and prior to 5:00 p.m., Eastern Standard Time, on December
31, 2007 at the principal office of the Rights Agent, or at the office of its
successor as Rights Agent, one one-hundredth fully paid non-assessable share of
Series A Junior Participating Preferred Stock, no par value per share (the
"Preferred Shares"), of the Company, at a purchase price of $10.00 per one
one-hundredth of a Preferred Share (the "Purchase Price"), upon presentation and
surrender of this Right Certificate with the Form of Election to Purchase duly
executed. The number of Rights evidenced by this Right Certificate (and the
number of one one-hundredths of a Preferred Share which may be purchased upon
exercise hereof) set forth above, and the Purchase Price set forth above, are
the number and Purchase Price as of December 31, 1997, based on the Preferred
Shares as constituted at such date. As provided in the Rights Agreement, the
Purchase Price and the number of one one-hundredths of a Preferred Share which
may be purchased upon the exercise of the Rights evidenced by this Right
Certificate are subject to modification and adjustment upon the happening of
certain events.

      This Right Certificate is subject to all of the terms, provisions, and
conditions of the Rights Agreement, which terms, provisions, and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties, and immunities hereunder of the
Rights Agent, the Company, and the holders of the Right Certificates. Copies of
the Rights Agreement are on file at the principal executive offices of the
Company and the above-mentioned offices of the Rights Agent.

      This Right Certificate, with or without other Right Certificates, upon
surrender at the principal office of the Rights Agent, may be exchanged for
another Right Certificate or Right Certificates of like tenor and date
evidencing Rights entitling the holder to purchase a like aggregate number of
Preferred Shares as the Rights evidenced by the Right Certificate or Right
Certificates surrendered shall have entitled such holder to purchase. If this
Right Certificate shall be exercised

                                       B-1

<PAGE>


in part, the holder shall be entitled to receive, upon surrender hereof another
Right Certificate or Right Certificates for the number of whole Rights not
exercised.

      Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Certificate (i) may be redeemed by the Company at a redemption price of
$.01 per Right or (ii) may be exchanged in whole or in part for Preferred Shares
or shares of the Company's Common Stock, no par value per share ("Common
Shares").

      No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights evidenced hereby (other than fractions which are integral
multiples of one one-hundredth of a Preferred Share, which may, at the election
of the Company, by evidenced by depository receipts), but in lieu thereof a cash
payment will be made, as provided in the Rights Agreement.

      No holder of this Right Certificate shall be entitled to vote or receive
dividends or be deemed for any purpose the holder of the Preferred Shares or of
any other securities of the Company which may at any time be issuable on the
exercise hereof, nor shall anything contained in the Rights Agreement or herein
be construed to confer upon the holder hereof, as such, any of the rights of a
stockholder of the Company or any right to vote for the election of directors or
upon any matter submitted to stockholders at any meeting thereof, or to give or
withhold consent to any corporate action, or to receive notice of meetings or
other actions affecting stockholders (except as provided in the Rights
Agreement), or to receive dividends or subscription rights, or otherwise, until
the Right or Rights evidenced by this Right Certificate shall have been
exercised as provided in the Rights Agreement.

      This Right Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.

      WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal. Dated effective as of December 31, 1997.

ATTEST:                             OPHTHALMIC IMAGING SYSTEMS


                                    By:
- -----------------------                -------------------------
                                        Title:


Countersigned:

AMERICAN SECURITIES TRANSFER, INC.


By:
   ---------------------
   Authorized Signature


                                       B-2

<PAGE>


                   Form of Reverse Side of Right Certificate

                              FORM OF ASSIGNMENT


                  (To be executed by the registered holder if such holder
                  desires to transfer the Right Certificate.)


      FOR VALUE RECEIVED
                         ------------------------------------------------------
hereby sells, assigns and transfers unto
                                        ---------------------------------------

- -------------------------------------------------------------------------------
                (Please print name and address of transferee)

- --------------------------------------------------------------------------------
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint ______________________ Attorney,
to transfer the within Right Certificate on the books of the within-named
Company, with full power of substitution.

Dated:                , 19
      ----------------    --

                                                      ------------------------
                                                      Signature

Signature Guaranteed:

      Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.


- --------------------------------------------------------------------------------

      The undersigned hereby certifies that the Rights evidenced by this Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).


                                                      ------------------------
                                                      Signature

- --------------------------------------------------------------------------------

                                       B-3

<PAGE>


            Form of Reverse Side of Right Certificate -- continued

                         FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                        exercise the Right Certificate.)

To: OPHTHALMIC IMAGING SYSTEMS


      The undersigned hereby irrevocably elects to exercise_________ Rights
represented by this Right Certificate to purchase the Preferred Shares issuable
upon the exercise of such Rights and requests that certificates for such
Preferred Shares be issued in the name of:

Please insert social security 
or other identifying number:
                            ------------------
                                                            


- --------------------------------------------------------------------------------
                        (Please print name and address)


- --------------------------------------------------------------------------------
If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security 
or other identifying number:
                            -------------------


- --------------------------------------------------------------------------------
                        (Please print name and address)



Dated:                , 19
      ----------------    --

                                                      --------------------
                                                      Signature

Signature Guaranteed:

      Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondence
in the United States.


                                       B-4

<PAGE>


            Form of Reverse Side of Right Certificate -- continued


      The undersigned hereby certifies that the Rights evidenced by this Right
Certificate are not beneficially owned by an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement).



                                                      -----------------------
                                                      Signature

- --------------------------------------------------------------------------------


                                    NOTICE

      The signature in the foregoing Forms of Assignment and Election must
conform to the name as written upon the face of this Right Certificate in every
particular, without alteration or enlargement or any change whatsoever.

      In the event the certification set forth above in the Form of Assignment
or the Form of Election to Purchase, as the case may be, is not completed, the
Company and the Rights Agent will deem the beneficial owner of the Rights
evidenced by this Right Certificate to be an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement) and such Assignment or
Election to Purchase will not be honored.


                                       B-5

<PAGE>


                                   EXHIBIT C

                         SUMMARY OF RIGHTS TO PURCHASE
                               PREFERRED SHARES

      On December 31, 1997, the Board of Directors of Ophthalmic Imaging Systems
(the "Company") declared a dividend of one preferred share purchase right (a
"Right") for each outstanding share of common stock, no par value per share (the
"Common Shares") payable on January 2, 1998 (the "Record Date") to the
shareholders of record on that date. Each Right entitles the registered holder
to purchase from the Company one one one-hundredth of a share of Series A Junior
Participating Preferred Stock, no par value per share ("Preferred Shares") of
the Company at a price of $10.00 per one one-hundredth of a Preferred Share (the
"Purchase Price"), subject to adjustment. The description and terms of the
Rights are set forth in a Rights Agreement (the "Rights Agreement") between the
Company and American Securities Transfer, Inc., as Rights Agent (the "Rights
Agent").

      Until the earlier to occur of (i) 10 days following a public announcement
that a person or group of affiliated or associated persons (an "Acquiring
Person") shall have acquired beneficial ownership of 20% or more of the
outstanding Common Shares, or (ii) 10 business days (or such later date as may
be determined by action of the Board of Directors prior to such time as any
person or group of affiliated persons becomes an Acquiring Person) following the
commencement of, or announcement of an intention to make, a tender offer or
exchange offer the consummation of which would result in the beneficial
ownership by a person or group of 20% or more of such outstanding Common Shares
(or, in the case of a tender or exchange offer commenced by Premier Laser
Systems, Inc. ("Premier Laser"), a tender or exchange offer the consummation of
which would result in Premier Laser becoming the beneficial owner of an
additional 1% of the Common Shares then-outstanding than are beneficially owned
by Premier Laser as of the close of business on December 31, 1997 (the
"Effective Date")) (the earlier of such dates being a "Distribution Date"), the
Rights will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificate with a copy
of this Summary of Rights attached thereto. An "Acquiring Person" will not be
deemed to include Premier Laser which has filed a Schedule 13D under the
Securities Exchange Act of 1934, as amended, unless Premier Laser becomes the
beneficial owner of an additional 1% or more of the Common Shares
then-outstanding than Premier owned at the close of business on the Effective
Date.

      The Rights Agreement provides that, until the Distribution Date (or
earlier redemption or expiration of the Rights), the Rights will be transferred
with and only with the Common Shares. Until the Distribution Date (or earlier
redemption or expiration of the Rights), new Common Share certificates issued
after the Record Date upon transfer or new issuance of Common Shares will
contain a notation incorporating the Rights Agreement by reference. Until the
Distribution Date (or earlier redemption or expiration of the Rights), the
surrender for transfer of any certificates for Common Shares outstanding as of
the Record Date, even without such notation or a copy of this Summary of Rights
being attached thereto, will also constitute the transfer of the Rights
associated with the Common Shares represented by such certificate. As soon as
practicable following the Distribution Date, separate certificates evidencing
the Rights ("Right Certificates") will be mailed

                                       C-1

<PAGE>


to holders of record of the Common Shares as of the close of business on the
Distribution Date and such separate Right Certificates alone will evidence the
Rights.

      The Rights are not exercisable until the Distribution Date. The Rights
will expire on December 31, 2007 (the "Final Expiration Date"), unless the Final
Expiration Date is extended or unless the Rights are earlier redeemed by the
Company, in each case, as described below.

      The Purchase Price payable, and the number of Preferred Shares or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares at a price, or
securities convertible into Preferred Shares with a conversion price, less than
the then-current market price of the Preferred Shares or (iii) upon the
distribution to holders of the Preferred Shares of evidences of indebtedness or
assets (excluding regular periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Common Shares) or of subscription
rights or warrants (other than those referred to above).

      The number of outstanding Rights and the number of one one-hundredths of a
Preferred Share issuable upon exercise of each Right are also subject to
adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common Shares payable in Common Shares or subdivisions,
consolidations, or combinations of the Common Shares occurring, in any such
case, prior to the Distribution Date.

      Preferred Shares purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 per share but will be entitled to an
aggregate dividend of 100 times the dividend declared per Common Share. In the
event of liquidation, the holders of the Preferred Shares will be entitled to a
minimum preferential liquidation payment of $100 per share but will be entitled
to an aggregate payment of 100 times the payment made per Common Share. Each
Preferred Share will have 100 votes, voting together with the Common Shares.
Finally, in the event of any merger, consolidation, or other transaction in
which Common Shares are exchanged, each Preferred Share will be entitled to
receive 100 times the amount received per Common Share. These rights are
protected by customary anti-dilution provisions.

      Because of the nature of the Preferred Shares' dividend, liquidation, and
voting rights, the value of the one one-hundredth interest in a Preferred Share
purchasable upon exercise of each Right should approximate the Board of
Director's estimated value of one Common Share.

      In the event that the Company is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold after a person or group has become an Acquiring Person, proper
provision will be made so that each holder of a Right will thereafter have the
right to receive, upon the exercise thereof at the then current exercise price
of the Right, that number of shares of common stock of the acquiring company
which at the time of such transaction will have a market value of two times the
exercise price of the Right. In the event that any person or group of affiliated
or associated persons becomes an Acquiring Person,

                                       C-2

<PAGE>


proper provision shall be made so that each holder of a Right, other than Rights
beneficially owned by the Acquiring Person (which will thereafter be void), will
thereafter have the right to receive upon exercise that number of Common Shares
having a market value of two times the exercise price of the Right.

      At any time after a person or group of affiliated or associated persons
becomes an Acquiring Person and prior to the acquisition by such person or group
of 50% or more of the outstanding Common Shares, the Board of Directors of the
Company may exchange the Rights (other than Rights owned by such person or group
which have become void), in whole or in part, at an exchange ratio of one Common
Share, or one one-hundredth of a Preferred Share (or of a share of a class or
series of the Company's preferred stock having equivalent rights, preferences,
and privileges), per Right (subject to adjustment).

      With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price. No fractional Preferred Shares will be issued (other than
fractions which are integral multiples of one one-hundredth of a Preferred
Share, which may, at the election of the Company, be evidenced by depository
receipts) and in lieu thereof, an adjustment in cash will be made based on the
market price of the Preferred Shares on the last trading day prior to the date
of exercise.

      At any time prior to a person or group of affiliated or associated persons
becoming an Acquiring Person, the Board of Directors of the Company may redeem
the Rights in whole, but not in part, at a price of $.01 per Right (the
"Redemption Price"). The redemption of the rights may be made effective at such
time on such basis and with such conditions as the Board of Directors in its
sole discretion may establish. Immediately upon any redemption of the Rights,
the right to exercise the Rights will terminate and the only right of the
holders of Rights will be to receive the Redemption Price.

      The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, except that from and
after such time as any person becomes an Acquiring Person no such amendment may
adversely affect the interests of the holders of the Rights.

      Until a Right is exercised, the holder thereof, as such will have no
rights as a shareholder of the Company, including without limitation, the right
to vote or to receive dividends.


      A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A dated
January 2, 1998. A copy of the Rights Agreement is available free of charge from
the Company. This summary description of the Rights does not purport to be
complete and is qualified in its entirety by reference to the Rights Agreement,
which is hereby incorporated herein by reference.

                                       C-3


                                   EXHIBIT 2


NEWS RELEASE



                                    FOR:      Ophthalmic Imaging Systems
                                    CONTACT:  J.R. Bothe & Associates
                                              Jack Bothe
                                              1-800-261-8552



For Immediate Release


                     OPHTHALMIC IMAGING SYSTEMS ANNOUNCES
                         ADOPTION OF RIGHTS AGREEMENT


SACRAMENTO, CALIFORNIA, December 31, 1997 -- Ophthalmic Imaging Systems (NASDAQ
Small Cap: OISI) announces the adoption of a Rights Agreement, effective
December 31, 1997, to provide the Board of Directors with the opportunity to
develop and pursue actions that promote the best long-term interests and
short-term interests of the shareholders of Ophthalmic Imaging Systems. The
Board of Directors declared a dividend of one Preferred Share Purchase Right on
each outstanding Ophthalmic Imaging System common share, to be payable on
January 2, 1998 to holders of record on that date. A copy of the Rights
Agreement is available for inspection at Ophthalmic Imaging Systems' principal
office, located at 221 Lathrop Drive, Suite I, Sacramento, California and also
will be filed with the Securities and Exchange Commission.

Headquartered in Sacramento, California, Ophthalmic Imaging Systems is engaged
in the business of designing, developing, manufacturing, and marketing digital
imaging systems and image enhancement and analysis software for use by
practitioners in the ocular health field.


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