Patent ID: 8481662

Claim:
A silicone hydrogel contact lens, comprising: a polymeric lens body that is the reaction product of a 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 1 of formula (1) is an alkyl group having from 1 to 4 carbon atoms, and R 2 of formula (1) is a hydrogen atom or a methyl group; and (b) a second siloxane monomer which is a dual-end methacrylate end-capped polydimethylsiloxane having a number average molecular weight of at least 7,000 daltons and being represented by formula (2): wherein R 1 of formula (2) is selected from either hydrogen or a methyl group; R 2 of formula (2) is selected from either of hydrogen or a C 1-4 hydrocarbon group; m represents an integer of from 0 to 10; n of formula (2) represents an integer of from 4 to 100; a and b of formula (2) represent integers of 1 or more; a+b is equal to 20-500; b/(a+b) is equal to 0.01-0.22; and the configuration of siloxane units includes a random configuration; and wherein the silicone hydrogel contact lens, when fully hydrated, has an energy loss from about 25% to about 45%.