Patent ID: 8415404
Filing Date: 2013-04-09
Classification: A61L,B29C,B29L,C08G,C08L,G02B

Abstract:
1. A contact lens, comprising: a core polymeric material formed from polymerization of a prepolymerization mixture including: (i) one or more oxyperm macromers or monomers selected from the group consisting of siloxane-containing macromers and monomers, fluorine-containing macromers and monomers, carbon-carbon triple bond-containing macromers and monomers, and combinations thereof; (ii) an ionoperm polymerizable material including at least one hydrophilic monomer; (iii) less than 5% by weight of a cross-linking agent other than component (i); and (iv) a solvent, wherein the contact lens has a diameter of 13 to 15 mm and a center thickness of 40 to 150 microns, and wherein the one or more oxyperm macromers or monomers and the ionoperm polymerizable material are present in the prepolymerization mixture in an amount sufficient to provide the contact lens an oxygen transmissibility of at least 70 barrers/mm, an ion permeability characterized by an Ionoflux Ion Permeability Coefficient of greater than 6.4×10