Silicone hydrogel contact lenses

摘要

Silicone hydrogel contact lenses that are derived from a polymerizable composition including at least one siloxane monomer and at least one hydrophobic ethylene glycol methyl ether methacrylate-containing monomer, or at least one hydrophilic vinyl ether-containing monomer, or both, wherein, when the at least one hydrophobic ethylene glycol methyl ether methacrylate-containing monomer is present in the polymerizable composition, it is present in an amount of from 1 to 20 unit parts by weight, and when the at least one hydrophilic vinyl ether-containing monomer is present in the polymerizable composition, it is present in an amount of from 1 to 20 unit parts by weight, are described. Batches of silicone hydrogel contact lenses and methods of making silicone hydrogel contact lenses are also described.

主权项

1. A silicone hydrogel contact lens, comprising:
a polymeric lens body that is the reaction product of a polymerizable composition, said polymerizable composition comprising (a) at least one siloxane monomer; and (b) ethylene glycol methyl ether methacrylate (EGMA) in an amount of from 1 to 20 unit parts by weight; wherein the polymerizable composition further comprises methyl methacrylate (MMA), and a ratio of unit parts by weight of MMA to unit parts by weight of EGMA present in the polymerizable composition is from about 6:1 to about 1:1.