Spincasting process for producing a series of contact lenses having desired shapes
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United States of America Patent
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-
Nov 9, 1993
Grant Date -
N/A
app pub date -
Aug 3, 1992
filing date -
Aug 3, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved process for spincasting contact lenses with differently shaped concave lens surfaces from the same mold design comprises providing molds with uniformly shaped concave surfaces, and spincasting in the molds a series of polymerizable mixtures. Contact lenses with differently shaped concave lens surfaces are obtained by varying the ratio of the monomers and an organic diluent in the polymerizable mixtures.
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