Patent ID: 9395559
Filing Date: 2016-07-19
CPC Classification: A61L,B29D,B29K,G02B,G02C

Claim Text:
1. A method of producing an ophthalmic lens comprising, (a) polymerizing an ophthalmic lens formulation to form a polymerized ophthalmic lens; (b) treating said polymerized ophthalmic lens with a solution comprising about 200 to about 1000 ppm of at least one wetting agent selected from the group consisting of polyvinylpyrrolidone, graft co-polymers of polyvinylpyrrolidone, and co-polymers of polyvinylpyrrolidone each having a K value between about K-60 to about K-120; and (b) heating said polymerized ophthalmic lens and solution to a temperature of at least about 50° C. to about 150° C.; and the ophthalmic lens formulation does not comprise said wetting agent prior to its polymerization.