Patent ID: 6635731
Filing Date: 2003-10-21
Classification: A61F,A61L,C08F,G02B

Abstract:
An ophthalmic device comprising a hydratable copolymer, the copolymer comprising:a) at least about 20 weight percent of a first monomeric component selected from the group consisting of ethylene glycol phenyl ether acrylate, and polyethylene glycol phenyl ether acrylate; b) at least about 10 weight percent of a second monomeric component selected from the group consisting of substituted styrene and unsubstituted styrene; c) at least about 10 weight percent of a third monomeric component selected from the group consisting of hydroxy ethyl methacrylate, hydroxyethoxy ethyl methacrylate, and methacrylic acid; d) less than about 10 weight percent of a crosslinking agent selected from the group consisting of a diacrylate and a dimethacrylate, wherein the copolymer has a refractive index greater than about 1.50 and is foldable at normal room temperature when hydrated; and (e) wherein the copolymer has a refractive index greater than about 1.5 and is rigid at about room temperature when dry, and wherein the copolymer is foldable at about room temperature when hydrated, and is machinable at about room temperature when dry.