Contact lens and composition

Details Contact lens and composition Contact lens and composition

G - Physics

02

C

88/40, 402/403

G02C 7/04 (2006.01)

Patent

CA 1167673

Abstract of the Disclosure A soft contact lens having in preferred embodiment an elliptical inside surface which has a numerical eccentricity of 0.2 to 0.5 and a zenith radium of curvature of 8.0 to 8.4 mm. It preferably consists of a copolymer comprising of 50% to 90% hydroxyethyl-methacrylate (HEMA) by weight, 2% to 20% one or more unsaturated carboxylic acids, 2% to 20% one or more base monomers, 5% to ",% aliphatic acrylate or methacrylate, and 0.1% to 1% of a -glycol-dimethacrylate cross- linker.

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