Patent ID: 8658747
Filing Date: 2014-02-25
Classification: B65B,G02B,G02C

Abstract:
1. A silicone hydrogel contact lens, comprising: a polymeric lens body that is the reaction product of a miscible polymerizable composition, said polymerizable composition comprising (a) a first siloxane monomer represented by formula (1): wherein m of formula (1) represents one integer from 3 to 10, n of formula (1) represents one integer from 1 to 10, R (b) a second siloxane monomer having a number average molecular weight greater than 7,000 daltons, wherein a total amount of siloxane monomers present in the polymerizable composition is from 30 unit parts to 50 unit parts by weight, and (c) at least one hydrophilic amide monomer having one N-vinyl group, the hydrophilic amide monomer being present in the polymerizable composition in an amount from 30 unit parts to 60 unit parts by weight; wherein the contact lens has ophthalmically acceptably wettable lens surfaces when fully hydrated and the contact lens has an equilibrium water content (EWC) from 30% to 70% when fully hydrated.