Process for hydrating soft contact lenses
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United States of America Patent
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-
Jan 14, 1992
Grant Date -
N/A
app pub date -
Apr 17, 1990
filing date -
Apr 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for releasing leachable substances from a polymeric contact lens blank. the contact lens is confined in a cavity within a carrier to permit the hydration of the lens without permitting it to invert or roll over. A fluid flow is introduced into the cavity about the lens to extract leachable material from the lens. The process significantly reduces the amount of leaching fluid that is used and the amount of time that is needed for hydration, washing and extraction.
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