Silicone hydrogel contact lenses having acceptable levels of energy loss
First Claim
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) a first siloxane monomer represented by formula (1);
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Abstract
Silicone hydrogel contact lenses having ophthalmically acceptable levels of energy loss are described. The lenses are derived from a polymerizable composition including 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, R1 of formula (1) is an alkyl group having from 1 to 4 carbon atoms, and each R2 of formula (1) is independently either a hydrogen atom or a methyl group; the lenses also include units derived from 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. The average energy loss of the silicone hydrogel contact lenses is from about 30% to about 45% when the lenses are fully hydrated. Batches of silicone hydrogel contact lenses and methods of making silicone hydrogel contact lenses are also described.
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16 Claims
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1. A silicone hydrogel contact lens, comprising:
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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); - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of manufacturing a silicone hydrogel contact lens, comprising:
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providing a miscible polymerizable composition, said polymerizable composition comprising (a) a first siloxane monomer represented by formula (1); - View Dependent Claims (15, 16)
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Specification