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US 11,953,651 B2Granted
Comfortable ophthalmic device and methods of its production
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsKevin P. McCabe, Robert B. Steffen, Hélène Aguilar, W. Anthony Martin, Susan W. Neadle, Ann-Marie Wong Meyers, Douglas G. Vanderlaan, Dominic P. Gourd, Kristy L. Canavan, Gregory A. Hill
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Abstract
This invention relates to comfortable ophthalmic devices and methods of producing such devices.
Claims6
An ocular device prepared by treating a polymerized ophthalmic lens with a solution comprising about 200 to about 1000 ppm of a 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 to a temperature of at least about 50° C. to about 150° C., provided that the ophthalmic lens does not comprise said wetting agent prior to its polymerization.
Dependencies are inferred from the claim text.