AUTONOMOUS TECHNOLOGIES CORP
S-3, 1998-12-22
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION

                                    FORM S-3

            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                      AUTONOMOUS TECHNOLOGIES CORPORATION
             (Exact name of registrant as specified in its charter)

                                    Florida
         (State or other jurisdiction of incorporation or organization)
                                   59-2554729
                      (I.R.S. Employer Identification No.)

         2800 Discovery Drive, Orlando, Florida 32826,  (407) 384-1600
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)

  Randy W. Frey, 2800 Discovery Drive, Orlando, Florida 32826,  (407) 384-1600
  (Name and address, including zip code, and telephone number, including area
                          code, of agent for service)


                                    Copy to:
             William A. Grimm, Esq., Gray, Harris & Robinson, P.A.,
    201 East Pine Street, Suite 1200, Orlando, Florida 32801, (407) 843-8880


  Approximate date of commencement of proposed sale to the public: __________,
                                     1998.

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [_]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [_]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [_]

                        CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
 Title of each class of                                                              Proposed maximum
 securities to be               Amount to be        Proposed maximum offering    aggregate offering price    Amount of registration
 registered                      registered             price per unit (1)                  (1)                        fee
- ------------------------------------------------------------------------------------------------------------------------------------

<S>                        <C>                     <C>                           <C>                        <C>
Common Stock, $0.01 par           813,197                       $ 5.75                     $ 4,675,883                $ 1,300
   value                          shares
- ------------------------------------------------------------------------------------------------------------------------------------

</TABLE>

(1) Estimated solely for the purpose of computing the registration fee pursuant
to Rule 457(c) based on the average of the high and low prices of Autonomous'
common stock as reported on the Nasdaq National Market on December 18, 1998.

The registrant hereby amends this registration statement on such date or dates
as may be necessary to delay its effective date until the registrant shall file
a further amendment which specifically states that this registration statement
shall thereafter become effective in accordance with section 8(a) of the
Securities Act of 1933 or until the registration statement shall become
effective on such date as the Commission acting pursuant to said section 8(a),
may determine.
<PAGE>
 
                 Subject to Completion, dated December 22, 1998
PROSPECTUS



                      AUTONOMOUS TECHNOLOGIES CORPORATION

                   813,197 shares of Autonomous common stock
                      for resale by a selling stockholder

     The selling stockholder, OZ Master Fund, Ltd., may offer for resale the
813,197 shares of common stock Shares for sale from time to time in transactions
on the Nasdaq National Market and/or in privately negotiated transactions, at:

     -fixed prices which may be negotiated
     -market prices prevailing at the time of sale
     -prices related to the negotiated prices
     -prices related to the prevailing market prices

     The selling stockholder may sell the common stock to or through broker-
dealers.  Broker-dealers may receive compensation from the selling stockholder
or from a purchaser of the common stock in connection with any sale of the
common stock to or through the broker-dealer.  See "Plan of Distribution" on
page 17.

     If the selling stockholder sells all of the common stock at the last sale
price for the common stock as reported by the Nasdaq National Market on December
11, 1998 ($5.6875 per share), the selling stockholder would receive aggregate
proceeds of $4,625,058 minus any compensation paid to broker-dealers.

     Autonomous' common stock is traded on the Nasdaq National Market under the
symbol "ATCI."



        THE COMMON STOCK OFFERED HEREBY INVOLVES A HIGH DEGREE OF RISK.
               See the section entitled "Risk Factors" on page 5.



     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ADEQUACY OR ACCURACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.

     This is not an underwritten public offering.

     The information in this prospectus is not complete and may be changed.  The
selling stockholder may not sell these securities to the public until the
registration statement filed with the Securities and Exchange Commission is
effective.  This prospectus is not an offer to sell these securities, and it is
not soliciting an offer to buy these securities in any state where the offer or
sale is not permitted.



               The date of this prospectus is December 22, 1998.
<PAGE>
 
                             AVAILABLE INFORMATION

     This prospectus, which is a part of a registration statement on Form S-3
filed by us with the Securities and Exchange Commission (SEC) under the
Securities Act of 1933, as amended, omits certain of the information set forth
in the registration statement.  We refer you to the registration statement and
its exhibits for further information about us and the common stock offered
hereby.  Copies of the registration statement and its exhibits are on file at
the offices of the SEC and may be obtained by paying a prescribed fee or may be
examined without charge at the public reference facilities of the SEC described
below.

     We are subject to the informational requirements of the Securities Exchange
Act of 1934, as amended.  Thus, we file reports, proxy statements and other
information with the SEC.  Our reports, proxy statements and other information
can be inspected and copied at the public reference facility maintained by the
SEC at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549 and at the
SEC's regional office located at 1401 Brickell Avenue, Suite 200, Miami, FL,
33131.  The SEC maintains a website that contains reports, proxy statements and
information statements and other information regarding registrants that file
electronically with the SEC.  The SEC's web site is http://www.sec.gov.  Copies
of such material can be obtained from the Public Reference Section of the SEC,
located at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.
Our common stock is quoted on the Nasdaq National Market.  Our reports, proxy
statements and other information may be inspected at the National Association of
Securities Dealers, Inc. at 1735 K Street, N.W., Washington, D.C.  20006.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The following documents or portions of documents filed by us (File No. 000-
28278) with the SEC are incorporated herein by reference: (a) Annual Report on
Form 10-K/A for the fiscal year ended December 31, 1997; (b) Definitive Proxy
Statement dated April 24, 1998, filed in connection with Autonomous' 1998 Annual
Meeting of Stockholders; (c) Current Report on Form 8-K filed on April 27, 1998;
(d) Current Report on Form 8-K filed on June 12, 1998; (e) Current Report on
Form 8-K filed on July 22, 1998; (f) Current Report on Form 8-K filed on August
18, 1998; (g) Form 10-Q for the quarter ended September 30, 1998; (h) Current
Report on Form 8-K filed on October 7, 1998; (i) Current Report on Form 8-K
filed on November 12, 1998; (j) Current Report on Form 8-K filed on December 7,
1998; and the description of Autonomous' common stock which is contained in
its Form S-1 filed under the Securities Act on March 8, 1996 (File No. 333-
2068).  The discussions contained in the Recent Developments sections entitled
"Acquisition by Summit Technology," "Exercise of Option to Purchase Series I
Convertible Preferred Stock," and "FDA and Canadian Approval" on page 3 of this
prospectus should be read in conjunction with the audited financial statements
incorporated herein by reference.

     All reports and other documents we file after December 22, 1998 pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all securities offered hereby have
been sold or which deregisters all securities remaining unsold, shall be deemed
to be incorporated by reference herein and to be a part hereof from the date of
the filing of such reports and documents.  Any statement contained in a document
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this prospectus to the extent that a statement contained or
incorporated by reference herein modifies or supersedes such statement.  Any
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this prospectus.

     We will provide without charge to each person to whom this prospectus is
delivered a copy of any or all of such documents which are incorporated herein
by reference (other than exhibits to such documents unless such exhibits are
specifically incorporated by reference into the documents that this prospectus
incorporates).  You should direct written or oral requests for copies to:
Secretary, Autonomous Technologies Corporation, 2800 Discovery Drive, Orlando,
Florida 32826, (407) 384-1600.

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

LADARVision and T-PRK are registered trademarks of Autonomous.  T-LASIK and
CustomCornea are trademarks of Autonomous.  Ciba Vision is a registered
trademark of Ciba Vision Corporation.  Other trademarks used herein are the
property of their respective owners.

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

In evaluating our business, you should carefully consider the risk factors
beginning on page 5 before purchasing the securities offered hereby.  This
prospectus contains certain forward-looking statements.  Any statements of
plans, intentions and objectives and statements of future economic performance
contained in this prospectus should be deemed to be forward-looking statements.
Cautionary statements are made in certain sections of this prospectus.  These
cautionary statements should be read as being applicable to all related forward-
looking statements wherever they appear in this prospectus, the materials
referred to in this prospectus or the materials incorporated by reference into
this prospectus.
<PAGE>
 
                              PROSPECTUS SUMMARY

     The following summary is qualified in its entirety by the more detailed
information and financial data appearing elsewhere and incorporated by reference
in this prospectus.  In evaluating our business, prospective investors should
carefully consider the information set forth under the heading "Risk Factors."
This prospectus contains certain forward-looking statements within the meaning
of Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934.  Any statements of plans, intentions and objectives and
statements of future economic performance contained in this prospectus should be
deemed to be forward-looking statements.  Statements containing terms such as
"believes," "does not believe," "no reason to believe," "expects," "plans,"
"intends," "estimates," or "anticipates" are considered to contain uncertainty
and are forward-looking statements.  Cautionary statements are made in certain
sections of this prospectus.  These cautionary statements should be read as
being applicable to all related forward-looking statements wherever they appear
in this prospectus, the materials referred to in this prospectus or the
materials incorporated by reference into this prospectus.

                                  THE COMPANY

     Autonomous Technologies Corporation is a Florida corporation formed in
1985.  We have been engaged since 1993 in the design and development of the next
generation of excimer laser instruments for laser vision correction (LVC) to
reduce or eliminate a person's dependence on eyeglasses or contact lenses.  Our
technology combines eye tracking with a narrow beam excimer laser to treat
common refractive vision disorders such as myopia (nearsightedness), hyperopia
(farsightedness) and astigmatism (blurred vision).  Our objective is to improve
refractive surgical outcomes for these conditions over those achieved by earlier
LVC systems.

     On November 2,1998, we received PMA approval by the Food and Drug
Administration (FDA) for the use of the LADARVision System in the United States
for the treatment of mild to moderate myopia (-1 to -10 diopters) with or
without astigmatism (up to -4 diopters).  The PMA approval allows us to sell or
place our LADARVision Systems in the United States.

     Vision correction is one of the largest medical markets, with approximately
136 million people in the United States using eyeglasses or contact lenses. /1/
Within this group, approximately 60 million people are myopic. /2/  Industry
sources /3/ estimate that Americans spend approximately $13 billion, at retail
prices, on eyeglasses, contact lenses and other vision correction products and
services each year.

     Our current marketing strategy is designed to broaden the penetration of
the LADARVision System in the refractive surgery market by offering better
clinical outcomes to surgeons and patients than is currently available and by
significantly reducing the up-front cost to the ophthalmologist as compared to
currently sold LVC systems. This marketing strategy would allow physicians to
utilize the LADARVision System by paying an advance procedure fee for the
equipment and paying a per procedure service fee thereafter.  In 1997,
Autonomous and CIBA Vision Corporation (CIBA Vision) conducted a market research
project that supports similar studies performed in 1995 and 1996 demonstrating
that there is significant interest in both the technical features and benefits
of the LADARVision System and in the pricing strategy of lower up-front costs
and competitive procedure fees. We may elect to change this marketing strategy
on a country-by-country and account-by-account basis depending on applicable law
and regulation, tax considerations, and competitive conditions.

- ---------------------------
/1/  According to a private market study and publications of Market Scope.

/2/  Excerpted from a presentation by Dr. Richard Lindstrom, entitled "Excimer
     Laser Photorefractive Keratectomy: Clinical Outline."

/3/  From an article published in the January 8, 1996 issue of Vision Monday, a
     trade publication for the ophthalmic industry, entitled "Tracking the
     Trends for `96 - Eyewear retailers look forward to a successful year as
     they focus on what's hot."


                                       1
<PAGE>
 
     Our LADARVision System technology combines high speed, laser radar eye
tracking with narrow beam shaping to form our new and proprietary technology
platform.  The LADARVision System is designed to address a need for
sophisticated eye tracking to compensate for saccadic eye movement during
surgery.  Saccadic eye movements are very rapid, involuntary and random in
amplitude and direction and are not suppressed or reduced by medication used
during LVC.  The presence of these eye movements during surgery degrades LVC
predictability and visual quality.  We believe that the LADARVision System
provides higher accuracy ablation by virtually eliminating decentration and
shaping error caused by eye movement.  The narrow beam excimer also provides a
smooth ablation, and our algorithms and shaping apparatus offer high speed,
minimizing surgical duration while retaining a high degree of pointing accuracy
to achieve predictable shaping.

     We believe the LADARVision System will yield more stable, predictable
results with less post-operative regression, potentially improving visual
quality and clinical outcomes for low to moderate myopia compared to first
generation excimer laser PRK systems manufactured and sold by our competitors.

     In 1994, we entered into a strategic alliance with CIBA Vision, a wholly-
owned subsidiary of Novartis AG.  The strategic alliance with CIBA Vision is for
the worldwide co-promotion of the LADARVision System.   CIBA Vision has invested
an aggregate of approximately $5 million in cash and $1.3 million in services in
Autonomous.  As a result of its investment, CIBA Vision owns approximately 16%
of our common stock.  CIBA Vision may, at its sole discretion, terminate the
strategic alliance upon sending us 30 days notice.  See "Risk Factors - Possible
Termination of Strategic Alliance with CIBA does not Eliminate Obligation to Pay
Commission to CIBA" herein and "Item 13. - Certain Relationships and Related
Transactions" in our Annual Report on Form 10-K, as amended, for the fiscal year
ended December 31, 1997.


     SINGLE MANUFACTURER FOR THE LASER COMPONENT.  The laser component in the
LADARVision System has been custom designed for us for high performance and
small size.  We own the design of the laser component including all drawings and
trade secrets relating to the design and manufacture of the laser component.
The laser component is currently manufactured by a small manufacturer in the
Eastern United States that specializes in manufacturing excimer lasers.  We
agreed to purchase 50 laser components from this small company before purchasing
laser components from other manufacturers or making the laser component itself.
This  agreement continues until we have purchased 50 laser components. As of the
date of this prospectus, we have purchased 20 of the 50 laser components.
Either of us, (as the non-breaching party), may terminate this relationship in
the event of an uncured breach of the manufacturing agreement.  We decided to
use a single manufacturer for the laser component in order to achieve economies
of scale in the manufacture of the laser component and to assure better control
of the quality of the laser component.  Achieving economies of scale and
controlling the quality of the laser component are and will continue to be
important factors regarding the laser component and will significantly influence
our decision as to whether or not to engage another manufacturer (or manufacture
the laser component ourselves) after we have met our obligation to purchase 50
laser components from this manufacturer.

     We required this manufacturer to lease a separate facility for the
manufacture of the laser component and to grant to us a security interest in all
of the equipment, drawings and inventory relating to the manufacturing of the
laser component as well as the facility lease.  We took these steps in this
business relationship in order to protect us against this manufacturer being
unable to make the laser component in adequate quantity and quality.  We also
placed two of our engineers at this manufacturer, beginning November 1997, for
approximately six months in order for these engineers to learn and document all
of the details of manufacturing the laser component.  We do not currently have
our engineers working at this manufacturer on a full-time basis.  However, the
two engineers have returned to this manufacturer for further documentation and
we anticipate our personnel will return to this manufacturer on occasion in the
future.

     In the event that this manufacturer is unable to supply the laser
components we require, we believe we have the ability to promptly step in and
manufacture the laser components on our own or have another qualified
manufacturer make the laser components at the current site where the laser
components are manufactured.  With these protective measures in place, we do not
believe there is a significant risk that we will be unable to obtain laser
components from a qualified manufacturer or make such components ourselves in
the event that this manufacturer cannot manufacture the laser components.

                                       2
<PAGE>
 
                              RECENT DEVELOPMENTS

 .         ACQUISITION BY SUMMIT TECHNOLOGY. On October 1, 1998, we agreed to
     merge with a subsidiary of Summit Technology, Inc., subject to approval of
     the transaction by the stockholders of both companies. Our stockholders
     will receive part stock in Summit and part cash in exchange for shares of
     our common stock they hold under a formula based on the average closing
     price of Summit for the five day period prior to closing.

          The total merger consideration is 11,650,400 shares of Summit common
     stock and an equal amount of value in cash, up to a maximum of $50 million
     in cash. The selling stockholder holds shares of our Series I convertible
     preferred stock purchased in August 1998. Assuming the selling stockholder
     elects to have its shares of Series I convertible preferred stock redeemed
     for cash, and assuming that the Summit common stock is valued at $4.29 per
     share, and making certain assumptions about our stock options and warrants,
     each share of our common stock will be exchanged for approximately .86
     shares of Summit stock and approximately $2.92 in cash. The amount of
     consideration is subject to certain adjustments based on the number of
     shares outstanding, including equivalent shares relating to options and
     warrants and any outstanding cash advances by Summit to us. The actual
     amounts will be based on the average closing price of Summit common stock
     before closing.

          Under the terms of the merger agreement, we must pay Summit a
     termination fee of $2.6 million in cash if the merger agreement is
     terminated in either of the following circumstances:

     +    the Autonomous stockholders have not approved the merger by February
          28, 1999 and a proposal by a third party for an alternative
          transaction has been made prior to the Autonomous Special Meeting of
          Stockholders that will be called in order to vote on the merger
          agreement; or

     +    we materially breach any representation or warranty in the merger
          agreement or fail to comply with any of our obligations under the
          merger agreement if these result in a material adverse change
          incapable of being cured by us.

 .         EXERCISE OF OPTION TO PURCHASE SERIES I CONVERTIBLE PREFERRED STOCK.
     On November 9, 1998, we received from the selling stockholder an
     irrevocable notice for the exercise of an option to purchase 400 shares of
     Series I convertible preferred stock. See "Private Placement of Series I
     Convertible Preferred Stock" below. We will receive gross proceeds of $4
     million upon the closing of the exercise of this option for the 400 shares
     and a two-year stock purchase warrant for 300,000 shares of common stock,
     exercisable at $6.17 per share. The closing of the option exercise is
     subject to the effectiveness of a resale registration statement, of which
     this prospectus forms a part. The 400 shares of Series I convertible
     preferred stock, with the 500 shares issued to the same investor on August
     7, 1998 (below) are convertible into an aggregate maximum of 2,263,197
     shares of common stock. As of December 11, 1998, the selling stockholder
     had converted 230 shares of Series I convertible preferred stock into a
     total of 656,148 shares of common stock, of which the selling stockholder
     had sold 431,884 shares. We anticipate using the proceeds from the sale of
     the 400 shares of Series I convertible preferred stock to fund operating
     expenses and working capital. The option, the warrant and the Series I
     convertible preferred stock were sold to the selling stockholder pursuant
     to an exemption from the registration requirements of the Securities Act
     provided by Section 4(2) thereof.

 .         FDA AND CANADIAN APPROVAL. On November 2, 1998, we received PMA
     approval from the FDA for the use of the LADARVision System in the United
     States for the treatment of mild to moderate 

<PAGE>
 
     myopia (-1 to -10 diopters) with or without astigmatism (up to -4 diopters)
     with photorefractive keratectomy (PRK). On November 3, 1998, we also
     received a Medical Device License from the Canadian Therapeutic Products
     Directorate for the LADARVision System. The License application was for
     mild to moderate myopia (-1 to -10 diopters) and astigmatism (up to -6
     diopters).

 .         PRIVATE PLACEMENT OF SERIES I CONVERTIBLE PREFERRED STOCK. On August
     7, 1998 we closed the private placement with the selling stockholder of 500
     shares of our Series I convertible preferred stock with an option to
     purchase 400 shares of Series I convertible preferred stock and a two-year
     stock purchase warrant for 300,000 shares of common stock. The shares of
     Series I convertible preferred stock have limited voting rights. The 500
     shares of Series I convertible preferred stock are convertible into a
     maximum of 1,750,000 shares of our common stock. The total 900 shares of
     Series I convertible preferred stock are convertible into an aggregate
     maximum of 2,263,197 shares of common stock. We used the proceeds from the
     sale of the 500 shares of Series I convertible preferred stock to fund
     operating expenses and working capital. The Series I convertible preferred
     stock and option were sold to the selling stockholder pursuant to an
     exemption from the registration requirements of the Securities Act provided
     by Section 4(2) thereof. A resale registration statement on Form S-3 on
     behalf of the selling stockholder covering the resale of common stock into
     which the 500 shares of Series I convertible preferred stock is convertible
     became effective on August 6, 1998. As of December 11, 1998, the selling
     stockholder had converted 230 shares of its Series I convertible preferred
     stock into 656,148 shares of common stock of which it had sold 431,884
     shares.

 .         LASIK HYPEROPIC ASTIGMATISM TRIALS APPROVED BY THE FDA. On June 12,
     1998, the FDA granted us permission to conduct LASIK hyperopic astigmatism
     trials for up to +6 diopters of sphere and up to -6 diopters of cylinder.
     We began these trials which will include up to 150 subjects and are subject
     to certain conditions required by the FDA. Laser In-Situ Keratomileusis or
     "LASIK" is a technique which involves both a corneal cut and excimer laser
     ablation. During the procedure, the ophthalmologist cuts a thin flap on the
     cornea before using the laser. After the laser ablation is completed, the
     flap is replaced. According to trade publications, LASIK typically offers
     patients less pain and shorter recovery times after surgery.

 .         NEGOTIATIONS WITH LENDER FOR EQUIPMENT FINANCING TERMINATED. In
     November 1998, our negotiations with an equipment financing company for
     secured financing for LADARVision Systems placed in the U.S. terminated
     primarily because of the uncertainties caused by the continuing litigation
     with VISX over certain VISX patents and, secondarily, due to the proposed
     acquisition by Summit.

 .         MANAGEMENT CHANGES. On September 30, 1998, we and Dr. Richard Capozza
     agreed that Dr. Capozza, as a result of our pending acquisition by Summit,
     would pursue other interests. Dr. Capozza was a valuable employee and
     played a key role in our development and progress over the past three
     years. Dr. Capozza's future contributions will be missed. Dr. Capozza
     resigned as President and as a director, effective September 30, 1998. Mr.
     Randy W. Frey, Chairman and Chief Executive Officer, resumed the title of
     President effective October 1, 1998. On October 1, 1998, we named Dr.
     Charline A. Gauthier, O.D., Ph.D. Vice President and Chief Operating
     Officer. Dr. Gauthier previously held the position of Vice President of
     Clinical and Regulatory Affairs.

     PROSPECTIVE INVESTORS SHOULD CAREFULLY CONSIDER THE INFORMATION SET FORTH
HEREIN IN THE SECTION CAPTIONED "RISK FACTORS" WHICH IMMEDIATELY FOLLOWS THIS
SECTION ON PAGE 5.

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

  Autonomous' executive offices are located at 2800 Discovery Drive, Orlando,
 Florida 32826, where it also maintains its primary research and manufacturing
     facilities. Its telephone number at that location is (407) 384-1600.

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


                                       4
<PAGE>
 
                                  RISK FACTORS


     In addition to other information included or incorporated by reference into
this prospectus, you should carefully consider the risk factors described below
in determining whether or not to purchase Autonomous common stock.



 .         THE ACQUISITION OF AUTONOMOUS BY SUMMIT MAY NOT OCCUR. There is a risk
     that our acquisition by Summit Technology, Inc. will not occur. This could
     be caused by any of several factors:

     +    The acquisition transaction is subject to the approval of our
          stockholders and the stockholders of Summit.  If the stockholders of
          either company do not approve, the acquisition will not take place.

     +    If the acquisition is challenged by the Federal Trade Commission,
          Summit may elect not to acquire us or be barred from acquiring us.
          The FTC is conducting an informal review of the acquisition at this
          time.

     +    Summit could terminate the merger agreement if we breach the
          agreement.



 .         IF THE ACQUISITION DOES NOT OCCUR, WE MAY NOT BE ABLE TO RAISE
     SUFFICIENT CAPITAL TO CONTINUE OPERATIONS. While the acquisition is
     pending, we are effectively unable to raise capital. If the acquisition
     does not occur in a timely manner, we may have exhausted our capital
     resources and be unable to continue operations. This would occur on or
     about April 1, 1999 assuming that we continue to fully prepare for a
     commercial introduction of the LADARVision System in the United States.



 .         WE WILL NEED ADDITIONAL CAPITAL TO FUND THE PLACEMENT OF THE
     LADARVISION SYSTEMS AND FOR OPERATIONS IF THE ACQUISITION DOES NOT OCCUR.
     Since business strategy calls for the placement of the LADARVision Systems
     with ophthalmologists primarily under procedure fee agreements, we will be
     required to fund the direct manufacturing costs of each system, estimated
     to be $220,000 for each system. Although we intend to receive prepaid fees
     for the placement of each machine and to seek financing for additional
     balances of capital investment, such prepaid fees and funding will not
     cover the initial manufacturing and installation costs of each system. If
     the acquisition does not occur, we will be required to obtain financing
     before we can achieve high volume commercial use of LADARVision Systems.

          In November 1998, our negotiations with an equipment financing company
     for secured financing for LADARVision Systems placed in the U.S. terminated
     primarily because of the uncertainties caused by the continuing litigation
     with VISX over certain VISX patents and, secondarily, due to the proposed
     acquisition by Summit.

          Until such time as the cash provided from the procedure fees derived
     from LADARVision System placements is sufficient to cover our clinical,
     research, development and administrative expenses, we will need additional
     capital for funding our operations if the acquisition does not occur. These
     expenses are currently running at approximately $1,500,000 per month.
     Current capital market conditions and the continuing patent litigation with
     VISX may make it very difficult or impossible for us to raise capital in
     the amounts required to continue operating or to make a U.S. launch of the
     LADARVision System.


                                       5
<PAGE>
 
 .         EXISTING STOCKHOLDERS WILL BE DILUTED IF WE ARE REQUIRED TO OBTAIN
     ADDITIONAL CAPITAL THROUGH EQUITY OFFERINGS; CONTINUED DILUTION OF EXISTING
     STOCKHOLDERS.

          To the extent that additional capital is obtained via equity
     offerings, the holdings of existing stockholders will be diluted and may be
     materially diluted if we are required to obtain significant amounts of
     additional capital via equity offerings. Additional dilution will occur to
     existing stockholders upon the exercise of outstanding warrants and stock
     options, the conversion of Series I convertible preferred stock and the
     exercise of the two-year stock purchase warrant to be issued to the selling
     stockholder upon the closing of its option. Further, additional dilution
     will occur to existing stockholders when we deliver 171,713 shares of
     common stock to CIBA immediately prior to the closing date of the
     acquisition, or May 15, 1999, whichever is sooner.


 .         LIMITED EXPERIENCE MANUFACTURING LADARVISION SYSTEMS; AUTONOMOUS
     RELIES ON THIRD PARTY SUPPLIERS AND A SINGLE MANUFACTURER. We have very
     limited experience in manufacturing and have not yet demonstrated that we
     are capable of producing the LADARVision System in the quantities necessary
     to meet the contemplated demand for the LADARVision System. We rely on
     third party suppliers (subcontractors) to provide the components necessary
     to manufacture the LADARVision System. Our manufacturing operations consist
     primarily of the final assembly of out-sourced parts and components,
     followed by testing to assure field performance and quality control. In
     order to be able to commercially produce the LADARVision System, we would
     need to expand our current manufacturing capabilities.

          We patented the cartridge containing the laser component of the
     LADARVision System, which is currently manufactured by a small company
     according to design documentation and specifications we own. We have the
     right to make, or have the laser component made, in the event this
     manufacturer is unable to deliver the number of laser components that we
     require.

          In addition to the laser component, the most significant system
     component is the tracking hardware. Other components of the LADARVision
     System such as the stereo microscope, computer hardware and system casing
     are available from several sources. We may be unable to obtain sufficient
     quantities of these components or, if it becomes necessary, we may have
     difficulty changing from the current laser component manufacturer to
     another manufacturer. If these difficulties occur, we may experience
     reductions in manufacturing capability that could cause delays in clinical
     trials, regulatory approvals and commercialization. These delays would have
     a material adverse effect on our business, financial condition, and results
     of operations.

          If the acquisition occurs, we believe that Summit will be able to
     provide significant assistance to us in commercially producing the
     LADARVision System.



 .         DEPENDENCE ON PROTECTIONS PROVIDED BY PATENTS AND PROPRIETARY
     TECHNOLOGY TO DIFFERENTIATE THE LADARVISION SYSTEM. Our success depends in
     part on our ability to obtain patents for our products and processes, to
     preserve our trade secrets and to operate without infringing upon the
     proprietary rights of third parties. In particular, our ability to
     differentiate the LADARVision System from existing LVC systems depends on
     our ability to protect our proprietary tracking and narrow-beam shaping
     technology.

          We have filed fourteen U.S. and foreign patent applications related to
     several features of our eye tracking technology as well as to our narrow
     beam delivery, corneal sculpting methods and retinal image analysis.  Six
     of these applications have resulted in the issuance of U.S. patents, which
     have expiration dates ranging from 2012 to 2018, and multiple claims for
     two additional U.S. patents have been allowed.  It is uncertain whether or
     not any other patents will be issued, whether the scope of any patent
     protection will exclude competitors or provide meaningful competitive
     advantages to us, whether any of our patents will be held valid if
     subsequently challenged, or whether others will not claim rights in or
     ownership of our patents and other proprietary rights.


                                       6
<PAGE>
 
     In both the U.S. and overseas, there are a number of patents covering
     methods, procedures and apparatus for performing corneal surgery with
     ultraviolet laser ablation.  There are also existing patents in eye
     tracking and narrow beam excimer shaping.  Patent positions of medical
     technology are generally uncertain and involve complex legal and factual
     questions.  As a result, we do not know whether any of our pending patent
     applications will result in the issuance of any patents or whether issued
     patents will provide significant proprietary protection, or will be
     circumvented or invalidated.  We cannot be certain that we were the first
     creator of inventions covered by our pending patent applications or that we
     were the first to file patent applications for such inventions since:  (1)
     patent applications in the U.S. are maintained in secret until the patent
     is granted and (2) publication of inventions in scientific or patent
     literature tend to lag behind patent grants by several months or even
     years.

 .         PATENT LITIGATION IS COSTLY AND ADVERSE OUTCOMES WOULD AFFECT OUR
     ABILITY TO MANUFACTURE AND SELL OUR PRODUCTS. If we are a party to patent
     litigation, which may be significant and costly, as others have experienced
     in the LVC market, and if we have adverse determinations entered against
     us, we may be unable to manufacture and sell our products without obtaining
     licenses from third parties. In the alternative, we may or may not be able
     to negotiate, and thus obtain, the licenses we would need in order to be
     able to manufacture and sell our products on terms favorable to us, if at
     all. If either of these occurred, the result could be to have a material
     adverse effect on our business, financial condition and results of
     operations.

          We are currently a party to such patent litigation. In October 1996,
     we filed suit in the U.S. against Pillar Point Partners (a partnership
     formed in 1992 to pool certain of their respective patents related to
     corneal sculpting technologies), Summit and VISX alleging non-infringement,
     unenforceability and invalidity of certain of the patents then held within
     Pillar Point. On June 9, 1998, Summit and VISX announced that they agreed
     to dissolve Pillar Point, to be effected as soon as possible. As a part of
     the dissolution of Pillar Point, Summit and VISX granted each other a
     worldwide, royalty free cross-license. Under this cross-license, each party
     will have full rights to use all patents owned by either company relating
     to LVC for use with their systems. The dissolution of Pillar Point will not
     affect our lawsuit against VISX. In September 1998, VISX filed a
     counterclaim in our suit seeking declaratory judgment of infringement by us
     and preliminary and permanent injunctions. In November 1998, we dismissed
     our lawsuit without prejudice against Summit. There can be no assurance
     that we will prevail in this lawsuit as it remains in effect with respect
     to VISX and others, or that other such suits will not arise. As of the date
     of this Prospectus, this suit has proceeded into the early phases of
     discovery.



 .         OUR ABILITY TO MANUFACTURE AND SELL OUR PRODUCTS MAY BE AFFECTED BY
     THE POSSIBLE NEED TO OBTAIN TECHNOLOGY LICENSES FROM VISX AND OTHERS. In
     the event our acquisition by Summit does not take place, depending upon
     whether our LADARVision System incorporates patented technology owned by
     VISX, and as may be required by any license agreement that we may enter
     into with VISX, we may be, or the LADARVision System users may be, required
     to pay royalties and per procedure fees to VISX for all procedures
     performed in the United States. We have not obtained a license from VISX as
     of this date. If we are required to obtain a license from VISX, we cannot
     yet determine if such a license will be granted, the per procedure fee, or
     other terms of such a license.

          There may be other United States and foreign patents for which we will
     need to negotiate licenses in order to sell, lease or use the LADARVision
     System in certain markets.

          There can also be no assurance that, or our customers will be
     successful in securing any licenses or, if such licenses are obtained, that
     they will be on terms acceptable to us or them. If our customers are unable
     to obtain licenses on favorable terms, or at all, they may not wish to have
     a LADARVision System placed with them. Thus, the failure by us or our
     customers to either obtain required licenses or to obtain licenses on
     favorable terms could have a material adverse effect on our business.



                                       7
<PAGE>
 
 .         LIMITED HUMAN CLINICAL TRIAL DATA IN HYPEROPIA AND LASIK CREATES
     UNCERTAINTY AS TO WHETHER OR NOT WE WILL BE ABLE TO OBTAIN FDA APPROVAL FOR
     THESE INDICATIONS. We must complete substantial additional human clinical
     trials under rigorous protocols at multiple sites in order to submit the
     required outcome data for hyperopia/astigmatism and LASIK with our PMA
     application(s). We currently anticipate completing patient enrollment for
     these two additional patient protocols by May 1999; however, there can be
     no assurances that we will be able to complete the patient enrollment by
     that date. The results of our early clinical trials in
     hyperopia/astigmatism appear satisfactory, but may not continue in future
     clinical trials for expanded indications. If our clinical trials do not
     show consistently good outcomes, we may not be able to obtain additional
     indications or claims for our products. Moreover, the results of clinical
     trials are not within our control, and we could experience delays in
     completing our clinical trials for a variety of reasons. Any failure to
     obtain a PMA with additional indications beyond those in our November 2,
     1998 approval, or any delay in clinical trials would have a material
     adverse effect on our business, financial condition and results of
     operations.



 .         LACK OF LONG TERM FOLLOW-UP IN THE LVC INDUSTRY LEADS TO UNCERTAINTY
     IN PREDICTABILITY AND COMPLICATIONS.

          Long-term follow-up data on both clinical and later commercial
     patients from any LVC system is unpredictable and may reveal additional
     complications that may have a material adverse effect on acceptance of LVC
     and market size. Such concern over the safety of LVC in general could
     result in adverse regulatory action. In turn, these would have a material
     adverse effect on our business, financial condition and results of
     operations.

          Historically, there have been concerns with respect to the safety and
     efficacy of LVC, including the predictability and stability of results.
     Potential complications and side effects in early LVC systems have
     included:

     +    post-operative discomfort due to re-epithelialization (eye membrane
          re-growth)
     +    corneal haze during healing (an increase in the light scattering
          properties of the cornea)
     +    glare/halos (undesirable visual sensations produced by bright lights)
     +    decreases in contrast sensitivity
     +    temporary increases in intraocular pressure in reaction to topical
          medication administered during and after the procedure
     +    fluctuations in refractive capabilities during healing
     +    occasional decreases or permanent loss in best corrected vision post-
          operatively (i.e., with corrective eyewear)
     +    unintended over-corrections or under-corrections
     +    regression of operative effect
     +    disorders of corneal healing; corneal scars
     +    corneal ulcers
     +    unintentionally induced astigmatism.



 .         OUR LONG-TERM GROWTH AND PROFITABILITY IS DEPENDENT ON THE MARKET
     ACCEPTANCE OF LVC. We believe that our long-term growth and ultimate
     profitability will depend upon acceptance of LVC in the United States and
     certain international markets and our ability to penetrate the LVC market
     successfully.

          LVC has only been marketed in the United States for approximately
     three years and initial market growth has been slower than originally
     anticipated in 1994 (market estimates published by Market Scope have shown
     approximately 100,000 and 200,000 U.S. procedures for the calendar years
     1996 and 1997, 

                                       8
<PAGE>
 
     respectively). The degree of eventual acceptance of LVC by ophthalmologists
     and persons needing refractive correction is still not fully determinable.
     The acceptance of LVC by the general population may be adversely affected
     by:

     +    retail price (which is not now or expected to be reimbursed to the
          patient by medical insurance)
     +    concerns relating to safety and efficacy
     +    accepted effectiveness of alternative methods of correcting refractive
          vision disorders
     +    current lack of long-term follow-up data
     +    possibility of unknown side effects
     +    an expected lack of third-party reimbursement for the procedure
     +    future reported adverse events
     +    other unfavorable publicity involving patient outcomes from the use of
          legal or illegal LVC systems manufactured by any participant in the
          LVC market

     Ophthalmologists could also be affected by the high costs and expenses of
     excimer laser systems and licenses, which might preclude access to such
     systems by some professionals.

          Our marketing strategy relies, in part, on ophthalmologists replacing
     the excimer laser system they are currently using with our LADARVision
     System.  Emerging new refractive surgery technologies and procedures may
     have the potential to compete with or materially limit the acceptance of
     LVC.  Current ophthalmic product suppliers whose products, including
     eyeglasses and contact lenses, are alternatives to LVC may adversely affect
     the market acceptance of LVC by their retail marketing strategies,
     including aggressive pricing.  The failure of LVC to achieve broad market
     acceptance would have a material adverse effect on our business, financial
     condition and results of operations.



 .         OUR LONG-TERM GROWTH AND PROFITABILITY IS DEPENDENT UPON OUR ABILITY
     TO KEEP UP WITH THE RAPIDLY CHANGING TECHNOLOGY AND COMPETE IN THE HIGHLY
     COMPETITIVE REFRACTIVE SURGERY MARKET. If we are unable to keep up with the
     rapidly changing technology and intense competition in the refractive
     surgery market will greatly affect our long-term growth and profitability
     as well as significantly and adversely effect our business, financial
     condition and results of operations.

          Two other companies, Summit and VISX, have been granted their PMA's
     and are actively marketing LVC systems in the United States for myopia and
     astigmatism. VISX has also recently been approved for hyperopia. Several
     companies, including Bausch & Lomb's Surgical Division (formerly
     Chiron/Technolas), Coherent/Schwind, Nidek, Meditek, Lasersight and
     Novatec, have introduced LVC systems outside the United States, where LVC
     has been commercialized for treating refractive disorders. Three of these
     companies have made announcements of PMA filings with the FDA, indicating
     substantial completion of their U.S. Phase III clinical trial protocols.
     Other companies have either begun or may soon begin clinical trials in the
     U.S., including Phase III clinical trials (the last stage before approval).

          LVC physicians and retail centers who purchase equipment from Summit
     or VISX may be reluctant to change to a new LADARVision System because of
     the significant capital investment they have made, or the familiarity with
     their current equipment and the inconvenience of changing to a new system.
     If other manufacturers of LVC systems are able to saturate the U.S. market
     with their equipment before we are able to market the LADARVision System in
     the U.S., we could experience a significantly lower share of the market
     than anticipated. This would have a material adverse effect on our
     business, financial condition and results of operations.

          Several of our competitors have allied with or developed their own
     vision care centers in Europe and the U.S. and have entered into strategic
     alliances with prominent corporations in the worldwide ophthalmic industry
     to promote their LVC excimer lasers. Many of these companies have
     substantially greater capabilities than we do in the areas of capital
     resources, research and development resources and regulatory, manufacturing
     and marketing experience. Our technology and products may be rendered

                                       9
<PAGE>
 
     obsolete or noncompetitive if our competitors succeed in developing or
     marketing technologies and products more effectively and less expensively
     than those we develop or market.

          Non-laser refractive procedures and technologies are under
     development, and it is possible that these technologies and procedures will
     be successfully developed as competition to our technology.



 .         RELIANCE ON A SINGLE POTENTIAL PRODUCT IF THE ACQUISITION DOES NOT
     OCCUR. Currently our only significant planned product is the LADARVision
     System for refractive correction. Our existing plans assume that we will
     derive substantially all of our revenues from the LADARVision System. If we
     are unable to make significant commercial placements of the LADARVision
     System for vision correction, our viability will be jeopardized.
     Furthermore, if we are unable to successfully design, clinically test and
     gain FDA approval on various additional indications, such as
     hyperopia/astigmatism and LASIK, our future growth could be significantly
     limited.



 .         SUCCESSFUL MARKET DEVELOPMENT AND EXPANSION DEPENDS ON OUR OBTAINING
     KEY OPERATIONAL, MANUFACTURING AND FIELD SERVICE PERSONNEL. As we continue
     the clinical development of the LADARVision System and prepare for
     additional regulatory approvals and other commercialization activities, we
     will need to continue to implement and expand our operational, financial,
     management resources and controls, and particularly our manufacturing and
     field service organization. If we fail to attract and retain experienced
     individuals for these positions or fail to effectively manage growth in our
     domestic and international operations as we transition from a development
     stage enterprise to a commercial entity, these could have a material
     adverse effect on our business, financial condition and results of
     operations.



 .         NO SIGNIFICANT SALES AND MARKETING EXPERIENCE; RELIANCE TO DATE ON
     STRATEGIC ALLIANCE PARTNER. We have limited experience in the sales and
     marketing of capital equipment for laser vision correction, and as we
     continue clinical studies with the LADARVision System and prepare for
     commercialization of the product in the U.S. and internationally, we must
     build a sales and marketing infrastructure. If the acquisition does not
     occur, it is possible that we will not be able to attract the personnel to
     develop the infrastructure to effectively market the LADARVision System.

          In 1994 and 1995, we entered into agreements that formed a strategic
     alliance with CIBA for the worldwide co-promotion of our LADARVision System
     excimer laser. However, as CIBA has developed a strong reputation in
     certain ophthalmic markets such as contact lenses, lens care and ophthalmic
     pharmaceuticals, it does not have considerable experience in the sale of
     ophthalmic equipment or in the refractive surgery market. Thus it is
     possible that CIBA will not be able to provide sufficient or effective co-
     marketing and business support.



 .         LACK OF SIGNIFICANT REVENUES; GOING CONCERN ACCOUNTANTS' OPINION. We
     are classified as a development stage company and our financial statements
     are therefore presented in accordance with Statement of Financial
     Accounting Standards (SFAS) No. 7. We must begin generating significant
     revenues before SFAS No. 7 permits dropping the development stage company
     designation. Additionally, our independent certified public accounting firm
     has modified its report on our financial statements as of December 31,
     1997, stating that factors discussed in Note 1 to our audited financial
     statements raise a substantial doubt about our ability to continue as a
     going concern. As of the date of this prospectus, we have not had
     significant revenues.

                                      10
<PAGE>
 
 .         WE MAY BE UNABLE TO OBTAIN REGULATORY APPROVALS FOR PRODUCTS REQUIRED
     BY THE U. S. GOVERNMENT FOR THE REGULATION OF MEDICAL DEVICES. The FDA
     approved our LADARVision System for use in the treatment of mild to
     moderate myopia (-1 to -10 diopters) with or without astigmatism (up to -4
     diopters) with PRK on November 2, 1998. To be effective competition against
     VISX in the LVC market, we will have to receive FDA approval for additional
     uses of our product, such as treatment of hyperopia and treatment using the
     LASIK technique. The FDA (and, to a lesser extent, comparable agencies in
     other countries) require rigorous pre-clinical and clinical testing for
     medical devices before it will approve a company's PMA. A PMA is required
     so that a company may market and sell medical devices in the United States.
     The FDA also requires (through its enabling legislation, the Food, Drug and
     Cosmetic Act) a company to manufacture its products in accordance with its
     current Quality System Regulation (QSR).

          In order for our product to carry the claim that it was manufactured
     in a quality environment, the FDA QSR (ISO 9001) requires us to comply with
     certain procedural and documentation requirements and to maintain a
     supplier-quality program with major subcontractors. We must demonstrate
     that we are properly managing the quality of all of our suppliers. There is
     always the risk that existing subcontractors who meet the requirements
     currently will not meet them at some time in the future. As a result, it is
     possible that we will be unable to pass QSR inspections at some time in the
     future because our subcontractors' documented quality systems fail to be
     sufficient. This failure by our subcontractors could hinder our commercial
     capability at that time. We could be delayed in producing, marketing and
     selling commercial systems in the U.S. market if we do not continue to meet
     the FDA's QSR guidelines or if any of our subcontractors cannot meet the
     quality requirements.

          Product and procedure labeling and all forms of promotional activities
     are also subject to examination by the FDA. If we do not comply with these
     requirements, it may result in warning letters, fines, injunctions, recall
     or seizure of products, suspension of manufacturing, denial or withdrawal
     of PMAs, and criminal prosecution.

          Changes in existing regulatory requirements or adoption of new
     requirements could have a material adverse effect on our business,
     financial condition and results of operations. Our business, financial
     condition or results of operations may be materially and adversely affected
     if we are required to incur significant costs to comply with laws and
     regulations in the future.



 .         INTERNATIONAL REGULATORY REQUIREMENTS MAY VARY WIDELY AND WE MAY BE
     UNABLE TO OBTAIN INTERNATIONAL REGULATORY APPROVALS. We have not received
     regulatory clearances in any foreign countries, except Canada, and there is
     no assurance that any others will be issued. In November 1998, we received
     a Medical Device License from the Canadian Therapeutic Products Directorate
     for the LADARVision System. The license application was for mild to
     moderate myopia (-1 to -10 diopters) and astigmatism (up to -6 diopters) as
     a Class III device.

          Requirements for regulatory approval relating to the LADARVision
     System may vary widely from country to country, ranging from simple product
     registrations to detailed submissions such as those required by the FDA.
     One such requirement is the European "CE" mark, an international symbol of
     quality and compliance with applicable European medical device directives.
     Until we receive a CE Mark certification, we are prohibited from placing
     the LADARVision System in Europe. This prohibition could have a material
     adverse effect on our business, financial condition, and results of
     operations. We have received ISO 9001 certification, which is needed when
     applying for a "CE" mark certification. We expect to apply for the CE Mark
     in summer of 1999.


 .         INTERNATIONAL COMMERCIAL ACTIVITIES MAY BE LIMITED OR DISRUPTED. Our
     international commercial activities may be limited by or disrupted by:

     +    the imposition of government controls

                                      11
<PAGE>
 
     +    unique license requirements
     +    regional economic conditions (such as recently in Asia)
     +    difficulties in staffing and managing such complexities
     +    political instability
     +    changes in tariffs or taxes
     +    currency fluctuations and changes
     +    trade restrictions
 
          Any limitation or disruption of our international commercial
     activities may adversely effect our business, financial condition and
     results of operations.



 .         OUR CONTINUING OBLIGATION TO PAY COMMISSIONS TO CIBA.   As part of the
     strategic alliance with CIBA, we will pay a 6% commission on net revenue
     worldwide from all equipment sales and patient procedure fees relating to
     ophthalmic refractive surgery until we pay an aggregate amount of
     $10,000,000 to CIBA.



 .         POSSIBLE TERMINATION OF STRATEGIC ALLIANCE WITH CIBA DOES NOT
     ELIMINATE OBLIGATION TO PAY COMMISSION TO CIBA. In the event that CIBA
     terminates the strategic alliance, we would be obligated to continue to pay
     to CIBA the 6% commission on procedure fee revenue derived from LADARVision
     Systems that were commercially placed at the time of the termination, for
     up to three years beyond termination. Our strategic alliance agreement with
     CIBA provides certain termination rights to both us and CIBA. CIBA may, at
     its sole discretion, terminate the strategic alliance upon sending 30 to 60
     days notice to us. As a result of this continued obligation to pay a
     commission to CIBA without receiving the associated services from CIBA, our
     operations, financial condition and the results of operations would be
     materially and adversely affected.



 .         POTENTIAL PRODUCT LIABILITY CLAIMS AND UNINSURED RISKS.  If we cannot
     maintain adequate insurance coverage at any time to cover potential product
     liability or other claims that are a part of our business, one or more
     claims would materially and adversely affect our business, financial
     condition and results of operations.

          We currently have product liability insurance coverage which we
     believe is adequate and which covers our exposure under both clinical and
     commercial surgeries. This is a "claims made" product liability insurance
     policy with coverage limits of $5 million per occurrence and $5 million in
     the aggregate annually. We have in the past agreed, and are likely to in
     the future agree, to indemnify certain medical institutions and personnel
     thereof conducting and participating in our clinical studies. We will
     indemnify our commercial customers for product liability claims arising out
     of defects, if any, in the LADARVision System.



 .         CONTROL BY CERTAIN EXISTING STOCKHOLDERS COULD INFLUENCE THE OUTCOME
     OF STOCKHOLDER VOTES. The directors, executive officers and certain
     entities affiliated with our directors beneficially own approximately 23%
     of our outstanding common stock and thus could influence the outcome of
     stockholder votes. As a result of Stockholder Agreements entered into
     between each of these beneficial holders and Summit in connection with the
     acquisition, Summit now holds the proxy to vote these shares of common
     stock while the acquisition is pending. Thus, Summit could influence the
     outcome of stockholder votes, including votes concerning the election of
     directors, the adoption or amendment of provisions in our Articles of
     Incorporation, as amended, and Bylaws, the


                                      12
<PAGE>
 
     approval of the acquisition by Summit or other similar transactions and
     delaying, deferring or preventing a change in control of Autonomous.



 .         ANTI-TAKEOVER MEASURES MAY HAVE A POTENTIAL ADVERSE EFFECT ON COMMON
     STOCK PRICE. Our Articles of Incorporation authorizes our Board of
     Directors to issue shares of preferred stock and to determine the rights,
     preferences, privileges and restrictions of such shares without any vote or
     action by the stockholders which could have the effect of delaying or
     preventing a change in control of Autonomous. The rights of the holders of
     the common stock will be subject to, and may be adversely affected by, the
     rights of the holders of any such preferred stock.

          Our Articles provide that any action to be taken by written consent in
     lieu of an annual or special meeting of the stockholders is prohibited
     unless the use of written consents is approved in advance thereof by the
     Board of Directors. An affirmative vote of the holders of not less than 
     two-thirds of the outstanding voting shares is required to amend such
     prohibition of use of written consents by the stockholders set forth above,
     making it difficult to amend such prohibition.

          Certain provisions of the Florida Business Corporation Act have anti-
     takeover effects and may inhibit a non-negotiated merger or other business
     combination.  These statutory provisions are intended to encourage any
     person interested in acquiring us to negotiate with and obtain the approval
     of the Board of Directors in connection with such a transaction.  If the
     acquisition does not occur, these provisions may discourage a future
     attempt to acquire control of us that is not presented to and approved by
     our Board of Directors, but which a substantial number or even a majority
     of our stockholders, might believe to be in their best interests or in
     which stockholders might receive a substantial premium for their shares
     over the current market prices.  As a result, stockholders who might desire
     to participate in such a transaction may not have an opportunity to do so.
     Our Board has approved our acquisition by Summit.



 .         SHARES ELIGIBLE FOR RESALE INTO THE PUBLIC MARKET WHICH ARE NOT
     CURRENTLY ACTIVELY TRADED IN THE PUBLIC MARKET. The following shares are
     available for resale into the public market with or without restrictions,
     and with or without the need to be registered, and may be considered a part
     of our freely traded stock of when evaluating whether or not to purchase
     our stock.

          At November 30, 1998, we had 11,989,479 shares of common stock
     outstanding. Of the shares of common stock currently outstanding, we
     estimate that there are currently 1,109,000 unregistered shares of common
     stock outstanding of which 670,000 may be freely traded or may be traded
     under certain volume and other restrictions set forth in Rule 144 (as
     recently amended).

          At November 30, 1998, we had reserved 1,989,377 shares of common stock
     for issuance pursuant to the 1995 Stock Option Plan and the 1996 Employee
     Stock Purchase Plan. Of this amount, 1,697,263 shares were subject to
     outstanding options at November 30, 1998, with a weighted average exercise
     price of $4.24 per share. Since these stock plans have been registered on
     Form S-8 with the SEC, common stock issued in conjunction with the stock
     plans are generally eligible for resale in the open market.

          At November 30, 1998, we had reserved 922,350 shares of common stock
     for issuance upon the exercise of warrants outstanding. At November 30,
     1998, the exercise of such warrants would generally result in unrestricted
     common stock being issued. Of these 922,350 warrants, all are exercisable
     at November 30, 1998, with a weighted average exercise price of $4.02 per
     share, and 817,350 are "in the money." As of November 9, 1998, we reserved
     an additional 300,000 shares of common stock for issuance upon the closing
     of the exercise of the stock purchase warrant to be issued to the selling
     stockholder, as described below in "Potential Adverse Effects of Series I
     Convertible Preferred Stock Conversions; New Significant Stockholder;
     Potential Decline in Price of Common Stock."


                                      13
<PAGE>
 
          Certain holders of our common stock and stock purchase warrants
     totaling 468,821 shares have certain rights to cause us to register the
     sale of such shares under the Securities Act. If we propose to register any
     of our securities under the Securities Act for our own account, holders of
     these registrable securities are entitled to notice of such registration
     and are entitled to include their registrable securities in such
     registration statement; provided, among other conditions, that the
     underwriters, if any, of such offering have the right to limit the number
     of shares included in such registration. Of the total number of registrable
     securities, 438,821 shares of the 1,695,371 shares owned by CIBA are
     included in the total of registrable securities. CIBA may require us to
     file additional registration statements covering those shares of common
     stock it owns, which are not otherwise registered, on Form S-3, subject to
     certain conditions and limitations. Registration of such shares under the
     Securities Act would result in such shares becoming freely transferrable
     under the Securities Act (except for shares held by our affiliates)
     immediately upon the effectiveness of such registration. CIBA has waived
     its right to have shares registered on this Form S-3.

          We cannot predict the effect, if any, that sales of shares of common
     stock under Rule 144 or pursuant to the registration rights described
     above, or the future availability of such shares for sale, will have on the
     market price of the common stock. Sales of substantial amounts of common
     stock in the public market, or the perception that such sales could occur,
     could adversely affect prevailing market prices for the common stock.



 .         POTENTIAL ADVERSE EFFECTS OF SERIES I CONVERTIBLE PREFERRED STOCK
     CONVERSIONS; NEW SIGNIFICANT STOCKHOLDER; POTENTIAL DECLINE IN PRICE OF
     COMMON STOCK.  In early 1998, we sold 500 shares of our Series I
     convertible preferred stock, which are convertible into a maximum of
     1,750,000 shares of our common stock to the selling stockholder.  The
     selling stockholder recently gave irrevocable notice to exercise an option
     to purchase an additional 400 shares of Series I convertible preferred
     stock and in exercising this option will also receive a two-year stock
     purchase warrant for 300,000 shares of common stock.  The 900 total shares
     of Series I convertible preferred stock are convertible into an aggregate
     maximum of 2,263,197 shares of common stock.  As of December 11, 1998, the
     selling stockholder had converted 230 such shares into 656,148 shares of
     common stock.  If the selling stockholder converts into the aggregate
     maximum number of shares and exercises the warrant and continues to hold
     these shares, subtracting the number of shares it sold as of December 11,
     1998 (431,884 shares), the selling stockholder would own 2,131,313
     shares of common stock.  Based on the number of shares of our stock
     outstanding on November 30, 1998, this would be a 17.78% interest in our
     common stock, making the selling stockholder the largest beneficial owner
     of our common stock.

          The selling stockholder may convert the Series I convertible preferred
     stock at a maximum rate of 115 shares per month which may accumulate.  The
     115 share limitation on conversion per month is set by our Articles of
     Incorporation.  The conversion of the 670 shares the selling stockholder
     currently owns may occur over a period of approximately 5 months from the
     date of this prospectus.  The selling stockholder receives more shares of
     common stock upon conversion when the market price of our common stock is
     lower.  If the trading price of the common stock decreases such that the
     selling stockholder is able to convert less than the 900 total shares into
     2,263,197 shares of common stock, and as a result, the selling stockholder
     has shares of Series I convertible preferred stock remaining in its
     possession following all such conversions, we are obligated to redeem those
     remaining shares of Series I convertible preferred stock for an amount
     equal to 110% of the face value of the remaining shares of Series I
     convertible preferred stock.  Thus, the selling stockholder will receive
     $11,000 (110% of the Series I convertible preferred stock face value of
     $10,000 per share) for every share of Series I convertible preferred stock
     we redeem.  If this occurs, the selling stockholder will realize a gain on
     its redeemed investment without being exposed to uncertain market and
     trading conditions.  As of December 11, 1998, the selling stockholder owned
     224,264 shares of common stock.


          There have been instances of a stock price decline in shares of other
     companies' common stock upon the sale of similar convertible securities,
     where such decline occurs in anticipation of the conversion and sale of
     those companies' shares of common stock into the public market.  We are
     unable to predict the

                                      14
<PAGE>
 
     effect that the continued conversion of the Series I convertible preferred
     stock into common stock and the sale of the common stock into the public
     market will have on the price of our common stock. In the event the selling
     stockholder sells a large number of shares of common stock into the public
     market over a short time period, the market price of our common stock could
     decline.

          There are hazards for small companies issuing shares of convertible
     preferred stock which are convertible at a floating ratio based on the
     stock price.  Short selling by the purchaser of convertible preferred stock
     could result in large profits to the purchaser by driving the market price
     down, then converting the convertible preferred stock at a low price.  In
     the event of a downturn in the price of our common stock, the selling
     stockholder could profit through a low conversion price.  Sales of shares
     of common stock by the selling stockholder, whether through short or long
     selling, could have the effect of driving the market price down after which
     the selling stockholder could convert additional shares of Series I
     convertible preferred stock at the lower price, then sell those shares
     after the market price has risen to a higher level.



                              SELLING STOCKHOLDER


     Autonomous closed the sale of 500 shares of its Series I convertible
preferred stock and an option to purchase an additional 400 shares of Series I
convertible preferred stock with a two-year stock purchase warrant for 300,000
shares of common stock to the selling stockholder on August 7, 1998.  The Series
I convertible preferred stock, the option and the warrant were sold for $5
million pursuant to an exemption from the registration requirements of the
Securities Act provided by Section 4(2) thereof.  The Convertible Preferred
Stock Purchase Agreement between Autonomous and the selling stockholder contains
representations and warranties as to the selling stockholder's status as an
"accredited investor" as such term is defined in Rule 501 promulgated under the
Securities Act.  Further, the selling stockholder represented that it acquired
the Series I convertible preferred stock for investment and with no present
intention of distributing the Series I convertible preferred stock, or the
shares into which the Series I convertible preferred stock is convertible unless
such shares are registered for resale.

     On November 9, 1998, the selling stockholder gave an irrevocable notice to
Autonomous for the exercise of the option.  The selling stockholder will pay
Autonomous $4 million upon the closing of the exercise of the option.  Upon the
exercise of the option, the selling stockholder will purchase 400 shares of
Series I convertible preferred stock and Autonomous will grant a two-year stock
purchase warrant for 300,000 shares of common stock exercisable at $6.17 per
share to the selling stockholder.  The closing of the exercise of the option is
subject to the effectiveness of the resale registration statement, of which this
prospectus is a part.  

     The selling stockholder may receive an aggregate maximum of 2,263,197
shares of common stock upon the conversion of the total 900 shares of Series I
convertible preferred stock.  The selling stockholder will receive 300,000
shares of common stock if it exercises the stock purchase warrant.  Autonomous
is registering 813,197 shares of common stock as required by the Convertible
Preferred Stock Purchase Agreement and Registration Rights Agreement between
Autonomous and the selling stockholder, as amended.  Of the 813,197 shares of
common stock, 513,197 represent the difference between the maximum number of
shares of common stock into which the initial 500 shares of Series I convertible
preferred stock my be converted (1,750,000 shares) and the aggregate maximum
number of shares of common stock into which the total 900 shares of Series I
convertible preferred stock may be converted (2,293,197 shares).  The remaining
300,000 shares of common stock represent those shares into which the stock
purchase warrant is exercisable.

     Autonomous agreed to prepare and file a resale registration statement as
soon as practicable and to bear all expenses other than underwriting discounts
and commissions and brokerage commissions and fees.  In addition, and 


                                      15
<PAGE>
 
in recognition of the fact that the selling stockholder, even though purchasing
the common stock without a view to distribution, may wish to be legally
permitted to sell the common stock when it deems appropriate, Autonomous filed
with the SEC a resale registration statement on Form S-3, of which this
Prospectus is a part, with respect to the 813,197 shares of common stock.

     The selling stockholder has not had a material relationship with Autonomous
within the past three years except as a result of the ownership of the Series I
convertible preferred stock and the option.

     The following table sets forth the name of the selling stockholder, the
shares common stock which may be offered pursuant to this prospectus.  This
information is based upon information provided by the selling stockholder.
Under the Convertible Preferred Stock Purchase Agreement, the selling
stockholder is entitled to convert 115 shares of Series I convertible preferred
stock into common stock per month (which may cumulate).  The common stock is
being registered to permit public secondary trading of the common stock.  The
selling stockholder may offer the common stock for resale from time to time.


<TABLE>
<CAPTION>
                                       Maximum Number of
                                      Shares Which May be
                                            Owned
                                      Prior to Offering (1)              Maximum Number of     Ownership After Offering (1)
                             ---------------------------------------     Shares of Common   ---------------------------------
                                   Number of                            Stock Being Offered  
          Name of               Shares of Common                         Pursuant to this       Number of Shares
    Selling Stockholder              Stock             Percent (4)         Prospectus            of Common Stock      Percent
- ---------------------------  ---------------------  ----------------  --------------------  ------------------  -------------
<S>                          <C>                    <C>               <C>                   <C>                 <C>
OZ Master Fund, Ltd. (2)               813,197 (3)              6.78%              813,197                   0              0%

                                     2,131,313 (5)             17.78%
</TABLE>

(1)  It is unknown if, when or in what amounts the selling stockholder may offer
     common stock for sale.  Since the selling stockholder may offer all or some
     of the common stock pursuant to this offering, and because there are
     currently no agreements, arrangements or understandings with respect to the
     sale of any of the common stock that will be held by the selling
     stockholder after completion of the offering, no estimate can be given as
     to the amount of common stock that will be held by the selling stockholder
     after completion of the offering.  However, for purposes of this table,
     Autonomous has assumed that, after completion of the offering, none of the
     common stock covered hereby will be held by the selling stockholder.
(2)  OZ Management, L.L.C., a Delaware limited liability company, shares
     investment and voting control over the shares owned by OZ Master Fund, Ltd.
     Daniel S. Och, a U.S. citizen and resident, may be considered the
     controlling person of OZ Management, L.L.C.
(3)  Represents the difference between the maximum number of shares of common
     stock into which the 500 shares of Series I convertible preferred stock may
     be converted (1,750,000 shares) and the maximum number of shares of common
     stock into which the 900 shares of  Series I Convertible Stock may be
     converted (2,263,197 shares), plus the shares of common stock into which
     the stock purchase warrant is exercisable (300,000 shares).
(4)  Percent of total shares of common stock outstanding as of November 30, 1998
     (11,989,479 shares).
(5)  Represents the total number of shares of common stock into which the total
     900 shares of Series I convertible preferred stock is convertible
     (2,263,197 shares) minus those shares which have been sold by the selling
     stockholder as of December 11, 1998 (431,884 shares).  Includes those
     shares of common stock underlying the stock purchase warrant (300,000
     shares), which is exercisable within 60 days of the date of this
     prospectus.

                                      16
<PAGE>
 
                              PLAN OF DISTRIBUTION


     Autonomous will receive no proceeds from this offering.  However,
Autonomous will receive the proceeds from the exercise of the two-year stock
purchase warrant for 300,000 shares of common stock at an exercise price of
$6.17 if the warrant is exercised.  The common stock offered hereby may be sold
by the selling stockholder from time to time in transactions on the Nasdaq
National Market, in the over-the-counter market, in negotiated transactions,
through the writing of options on the common stock or a combination of such
methods of sale, at fixed prices which may be changed, at market prices
prevailing at the time of the sale, at prices related to prevailing market
prices or at negotiated prices.  The selling stockholder may effect such
transactions by selling the common stock to or through broker-dealers.  Such
broker-dealers may receive compensation in the form of discounts, concessions or
commissions from the selling stockholder and/or the purchasers of the common
stock for whom such broker-dealers may act as agents or to whom they sell as
principals, or both (which compensation to a particular broker-dealer might be
in excess of customary commissions).

     The common stock may be sold by one or a combination of the following:
     (a)  a block trade in which the broker or dealer so engaged will attempt to
          sell the common stock as agent, but may position and resell a portion
          of the block as principal to facilitate the transaction;
     (b)  purchases by a broker or dealer as principal and resale by such broker
          or dealer for its account pursuant to this prospectus;
     (c)  an over-the-counter distribution in accordance with the rules of the
          Nasdaq National Market;
     (d)  ordinary brokerage transactions and transactions in which the broker
          solicits purchasers; and
     (e)  in privately negotiated transactions.

     In connection with distributions of the common stock or otherwise, the
selling stockholder may enter into hedging transactions with broker-dealers and
the broker-dealers may engage in short sales of the common stock in the course
of hedging the positions they assume with such selling stockholder.  The selling
stockholder may sell the common stock short and deliver such common stock to
close out such short positions.  The selling stockholder may enter into options
or other transactions with broker-dealers that involve the delivery of the
common stock to the broker-dealers, which may then resell or otherwise transfer
such common stock.  The selling stockholder also may loan or pledge the common
stock to a broker-dealer or other financial institution may sell the common
stock so loaned or upon a default may sell or otherwise transfer the pledged
common stock.

     In order to comply with the securities laws of certain states, if
applicable, the common stock will be sold in such jurisdictions only through
registered or licensed brokers or dealers.  In addition, in certain states the
common stock may not be sold unless it has been registered or qualified for sale
in the applicable state or an exemption from the registration or qualification
requirement is available and is complied with.

     The selling stockholder and any broker-dealers or agents that participate
with the selling stockholder in the distribution of the common stock may be
deemed to be "underwriters" within the meaning of the Securities Act, and any
commissions received by them and any profit on the resale of the common stock
purchased by them may be deemed to be underwriting commissions or discounts
under the Securities Act.

     Under applicable rules and regulations under the Exchange Act, any person
engaged in the distribution of the common stock may not simultaneously engage in
market making activities with respect to the common stock of Autonomous for a
period of two business days prior to the commencement of such distribution, in
addition and without limiting the foregoing, the selling stockholder will be
subject to the applicable provisions of the Exchange Act and the rules and
regulations thereunder, which provisions may limit the timing of purchases and
sales of Autonomous' common stock by the selling stockholder.

     Any or all of the sales or other transactions involving the common stock
described above, whether effected by the selling stockholder, any broker-dealer
or others, may be made pursuant to this prospectus.  In addition, any common
stock that qualifies for sale pursuant to Rule l44 under the Securities Act may
be sold under Rule 144 rather than pursuant to this Prospectus.

                                      17
<PAGE>
 
     The common stock will be issued to the selling stockholder upon the
conversion of the Series I convertible preferred stock or the exercise of the
Warrant, which were sold to the selling stockholder pursuant to an exemption
from the registration requirements of the Securities Act provided by Section
4(2) thereof.  Autonomous agreed to register the common stock for resale under
the Securities Act and to indemnify and hold the selling stockholder harmless
against certain liabilities under the Securities Act that could arise in
connection with the sale by the selling stockholder of the common stock.
Autonomous has agreed to pay all reasonable fees and expenses incident to the
filing of this registration statement.



                                 LEGAL MATTERS


     The validity of the shares of common stock offered hereby and certain other
legal matters will be passed upon for Autonomous by Gray, Harris & Robinson,
P.A., Orlando, Florida.



                                    EXPERTS


     The financial statements incorporated by reference to the Annual Report on
Form 10-K/A, in this prospectus and elsewhere in the registration statement have
been audited by Arthur Andersen LLP, independent certified public accountants,
as indicated in their report with respect thereto, and are included herein in
reliance upon the authority of said firm as experts in auditing and accounting
in giving said report.  Reference is made to said report, which includes an
explanatory paragraph with respect to the uncertainty regarding Autonomous'
ability to continue as a going concern as discussed in Note 1 to the financial
statements.


                                      18
<PAGE>
 
     No dealer, salesperson or other person has been authorized to give any
information or to make any representations other than those contained in this
prospectus and, if given or made, such information or representations must not
be relied upon as having been authorized by Autonomous, the selling stockholder
or by any other person.  This prospectus does not constitute an offer to sell or
a solicitation of an offer to buy any securities other than the shares of common
stock offered hereby, nor does it constitute an offer to sell or a solicitation
of an offer to buy any of the shares offered hereby to any person in any
jurisdiction in which such offer or solicitation would be unlawful.  Neither the
delivery of this prospectus nor any sale made hereunder shall under any
circumstances create any implication that the information contained herein is
correct as of any date subsequent to the date hereof.



                               TABLE OF CONTENTS

PROSPECTUS SUMMARY.......................................................  1

RECENT DEVELOPMENTS......................................................  3

RISK FACTORS.............................................................  5

SELLING STOCKHOLDER...................................................... 15

PLAN OF DISTRIBUTION..................................................... 17

LEGAL MATTERS............................................................ 18

EXPERTS.................................................................. 18


                                      19
<PAGE>
 
                                    PART II
                    INFORMATION NOT REQUIRED IN PROSPECTUS

                  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

The following table sets forth the costs and expenses payable by Autonomous in
connection with the sale of common stock being registered.  All of the amounts
shown are estimates except the registration fee.

SEC Registration Fee                                     $      1,300
Accounting fees and expenses                                   10,000
Legal fees and expenses                                        10,000
Printing and electronic filing expenses                         3,000
Placement fee                                                 120,000
                                                         ------------
Total                                                    $    144,300   


                   INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Section 607.0850 of the Florida Business Corporation Act, provides that a
corporation may indemnify any person who was or is a party (other than an action
by or in the right of the corporation) by reason of the fact that he is or was a
director, officer, employee or agent of the corporation, or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation, partnership, joint venture, trust or other enterprise,
against liability incurred in connection with such proceeding, including any
appeal thereof, if he acted in good faith and in a manner he reasonably believed
to be in, or not opposed to, the best interests of the corporation, and with
respect to any criminal action or proceeding, had no reasonable cause to believe
his conduct was unlawful.  Section 0850 further provides that a corporation
similarly may indemnify any such person serving in any such capacity who was or
is a party in the right of the corporation to procure a judgment in its favor,
against the estimated expense of litigating the proceeding to conclusion
actually and reasonably incurred in connection with the defense or settlement of
such proceeding if he acted in good faith and in a manner he reasonably believed
to be in, or not opposed to, the best interests of the corporation and except
that no indemnification shall be made in respect of any claim, issue or matter
as to which such person shall have been adjudged to be liable unless, and only
to the extent that the court in which such proceeding was brought, or any other
court of competent jurisdiction, shall determine upon application that, despite
the adjudication of liability but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to indemnity for such expenses
which such other court shall deem proper.

     Section 607.0831 of the Florida Business Corporation Act provides that a
director is not personally liable for monetary damages to the corporation or any
other person for any statement, vote, decision, or failure to act, regarding
corporate management or policy, by a director, unless (i) the director breached
or failed to perform his duties as a director, (ii) the director's breach or
failure to perform constitutes a violation of criminal law unless the director
had no reasonable cause to believe his conduct was unlawful, the director
derived an improper personal benefit directly or indirectly, (iii) the directors
conduct triggers the liability provisions of Section 0834 (relating to unlawful
distributions), (iv) the director's conduct constitutes a conscious disregard
for the best interest of the corporation, or will misconduct in a proceeding by
or in the right of the corporation or a stockholder, or (v) the director's
conduct constitutes recklessness or an act or omission committed in bad faith or
with malicious purpose or in a manner exhibiting wanton and willful disregard of
human rights, safety, or property in a proceeding by or in the right of someone
other than the corporation or a stockholder.

     Autonomous' Articles provide that the Registrant is authorized to indemnify
any director or officer, or former director or officer, in the manner provided
in Autonomous' bylaws and to the fullest extent permitted by the laws of the
State of Florida.  There are no further provisions in Autonomous' bylaws for
indemnification of directors and officers.


                                      20
<PAGE>
 
                                   EXHIBITS

Exhibit Number                                              Exhibit Description
- -------------------------  -----------------------------------------------------
 4.1 *                     The Rights of Securities Holders as set forth in
                           Article IV of the Third Amended and Restated Articles
                           of Incorporation
 5.1                       Opinion of Gray, Harris & Robinson, P.A.
10.1 **                    Convertible Preferred Stock Purchase Agreement
10.2 **                    Registration Rights Agreement
10.3 **                    Warrant
10.4 **                    Certificate of Designation
10.5 **                    Financial Statements
10.6 ***                   Letter Agreement, dated July 22, 1998, amending the
                           Convertible Preferred Stock Purchase Agreement, the
                           Registration Rights Agreement and the Certificate of
                           Designation
10.7 ****                  Notice of Option Exercise, dated November 9, 1998
23.1                       Consent of Arthur Andersen LLP
23.2                       Consent of Gray, Harris & Robinson, P.A. (Included in
                           the opinion filed as Exhibit 5.1, previously filed)
24.1                       Power of Attorney (see p. 23)



*    Incorporated by reference to Exhibit 3.1 in the Current Report on Form 8-K
     filed August 18, 1998.
**   Incorporated by reference to the Current Report on Form 8-K filed 
     April 27, 1998.
***  Incorporated by reference to the Current Report on Form 8-K filed 
     July 22, 1998.
**** Incorporated by reference to the Current Report on Form 8-K filed 
     November 12, 1998.
                                 UNDERTAKINGS

     The undersigned registrant hereby undertakes to file, during any period in
which offers or sales are being made, a post-effective amendment to this
registration statement, to include any material information with respect to the
plan of distribution not previously disclosed in the registration statement or
any material change to such information in the registration statement.  For
purposes of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.  The
undersigned registrant further undertakes to remove from registration, by means
of a post-effective amendment, any of the securities being registered which
remain unsold at the termination of the offering.

     The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

                                      21
<PAGE>
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefor, unenforceable.  In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

     The undersigned registrant hereby undertakes that:

          (1)    For purposes of determining any liability under the Securities
          Act of 1933, the information omitted from the form of prospectus filed
          as part of this registration statement in reliance upon Rule 430A and
          contained in a form of prospectus filed by the registrant pursuant to
          Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be
          deemed to be part of this registration statement as of the time it was
          declared effective.

          (2)    For the purpose of determining any liability under the
          Securities Act of 1933, each post-effective amendment that contains a
          form of prospectus shall be deemed to be a new registration statement
          relating to the securities offered therein, and the offering of such
          securities at that time shall be deemed to be the initial bona fide
          offering thereof.


                                  SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Orlando, State of Florida on this 22nd day of
December, 1998.

Autonomous Technologies Corporation

By:       /s/ Randy W. Frey                     Date: December 22, 1998
     ------------------------------------            -------------------
     Randy W. Frey
     Chairman of the Board and Chief Executive Officer

By:       /s/ Monty K. Allen                    Date: December 22, 1998
     ------------------------------------            -------------------
     Monty K. Allen
     Vice President, Treasurer, 
     Chief Financial Officer and Principal Accounting Officer


                                      22
<PAGE>
 
SIGNATURE PAGE TO FORM S-3
Autonomous Technologies Corporation

                               POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS:

     That the undersigned officers and directors of Autonomous Technologies
Corporation, a Florida corporation, do hereby constitute and appoint jointly and
severally, Randy W. Frey and Monty K. Allen, and each of them, the lawful
attorneys and agents, with power and authority to do any and all acts and things
and to execute any and all instruments which said attorneys and agents determine
may be necessary or advisable or required to enable said corporation to comply
with the Securities Act, and any rules or regulations or requirements of the
Securities and Exchange Commission in connection with this registration
statement.  Without limiting the generality of the foregoing power and
authority, the powers granted include the power and authority to sign the names
of the undersigned officers and directors in the capacities indicated below to
this registration statement, to any and all amendments, both pre-effective and
post-effective, and supplements to this registration statement, and to any and
all instruments or documents filed as part of or in conjunction with this
registration statement or amendments or supplements thereof, and each of the
undersigned hereby ratifies and confirms all that said attorneys and agents or
any of them shall do or cause to be done by virtue hereof.  This Power of
Attorney may be signed in several counterparts.

     IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated.

     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

<TABLE>
<CAPTION>

Signature                             Capacity                                               Date
- ---------                             --------                                               ----
<S>                                   <C>                                                    <C>
     /s/ Randy W. Frey                President, Chief Executive Officer and Chairman of     December 22, 1998
- ------------------------------------  the Board
Randy W. Frey

     /s/ G. Arthur Herbert            Director                                               December 22, 1998
- ------------------------------------
G. Arthur Herbert

     /s/ Stanley Ruffett              Director                                               December 22, 1998
- ------------------------------------
Stanley Ruffett

     /s/ Richard H. Keates,           Director                                               December 22, 1998
- ------------------------------------
Richard H. Keates, MD

     /s/ Whitney A. McFarlin          Director                                               December 22, 1998
- ------------------------------------
Whitney A. McFarlin
</TABLE>
<PAGE>
 
                               INDEX TO EXHIBITS


Exhibit Number             Exhibit Description
- ------------------         ---------------------------------------------
 4.1 *                     The Rights of Securities Holders as set forth in
                           Article IV of the Third Amended and Restated Articles
                           of Incorporation
 5.1                       Opinion of Gray, Harris & Robinson, P.A.

10.1 **                    Convertible Preferred Stock Purchase Agreement

10.2 **                    Registration Rights Agreement

10.3 **                    Warrant

10.4 **                    Certificate of Designation

10.5 **                    Financial Statements

10.6 ***                   Letter Agreement, dated July 22, 1998, amending the
                           Convertible Preferred Stock Purchase Agreement, the
                           Registration Rights Agreement and the Certificate of
                           Designation

10.7 ****                  Notice of Option Exercise, dated November 9, 1998

23.1                       Consent of Arthur Andersen LLP

23.2                       Consent of Gray, Harris & Robinson, P.A. (Included in
                           the opinion filed as Exhibit 5.1, previously filed)

24.1                       Power of Attorney (see p. 23)

*    Incorporated by reference to Exhibit 3.1 in the Current Report on Form 8-K
     filed August 18, 1998.
**   Incorporated by reference to the Current Report on Form 8-K filed 
     April 27, 1998.
***  Incorporated by reference to the Current Report on Form 8-K filed 
     July 22, 1998.
**** Incorporated by reference to the Current Report on Form 8-K filed 
     November 12, 1998. 

                                      24

<PAGE>
 
                                                                     Exhibit 5.1

          [LETTERHEAD OF GRAY, HARRIS & ROBINSON, P.A. APPEARS HERE]


                               December 21, 1998


Autonomous Technologies Corporation
2800 Discovery Drive
Orlando, Florida 32826

        RE: Registration Statement on Form S-3

Dear Ladies and Gentlemen:

        We have examined the Registration Statement on Form S-3 to be filed by 
you with the Securities and Exchange Commission on or about December 22, 1998 
(the "Registration Statement") in connection with the registration under the 
Securities Act of 1933, as amended, of 813,197 shares of Common Stock of 
Autonomous Technologies Corporation (the "Shares"). As your counsel in 
connection with this transaction, we have examined the proceedings taken and 
proposed to be taken in connection with said sale and issuance of the Shares.

        It is our opinion that, upon completion of the proceedings being taken
or contemplated by us, as your counsel, to be taken prior to the issuance of the
Shares, the Shares when issued in the manner referred to in the Registration
Statement will be legally issued, fully paid and nonassessable.

<PAGE>
 
[LETTERHEAD OF GRAY, HARRIS & ROBINSON, P.A. APPEARS HERE]



Autonomous Technologies Corporation
Page 2
December 21, 1998




        We consent to the use of this opinion as an exhibit to the Registration 
Statement, and further consent to the use of our name wherever appearing in the 
Registration Statement, including the prospectus constituting part thereof, and 
any amendment thereto and any registration statement for the same offering 
covered by the Registration Statement that is to be effective upon filing 
pursuant to Rule 462(b) and all post-effective amendments thereto.


                                        Very truly yours,

                                        Gray, Harris & Robinson
                                        Professional Association

                                        By:  /s/ William A. Grimm
                                             --------------------
                                                 William A. Grimm


<PAGE>
 
                                                                    Exhibit 23.1

              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

As independent certified public accountants, we hereby consent to the 
incorporation by reference in this registration statement of our report dated 
June 2, 1998, on the financial statements of Autonomous Technologies Corporation
included in Autonomous Technologies Corporation's Annual Report on Form 10-K/A 
for the fiscal year ended December 31, 1997, and to all references to our firm 
included in this registration statement.


                                             /s/ Arthur Andersen LLP

December 16, 1998,                             
  Orlando, Florida


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