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EXHIBIT 23.1
CONSENT OF ERNST & YOUNG, LLP, INDEPENDENT AUDITORS
We consent to the reference to our firm under the caption
"Experts" in the Registration Statement (Form S-3) and related Prospectus of
InSite Vision Incorporated for the registration of 4,857,097 shares of its
common stock and to the incorporation by reference therein of our report dated
February 9, 2000, with respect to the consolidated financial statements of
InSite Vision Incorporated included in its Annual Report (Form 10-K) for the
year ended December 31, 1999, filed with the Securities and Exchange Commission.
Walnut Creek, California ERNST & YOUNG LLP
May __, 2000
