Extended wear ophthalmic lens
First Claim
1. A silicone hydrogel contact lens comprising a core polymeric material formed from polymerizable materials including:
- (a) at least one siloxane-containing macromer or monomer; and
(b) at least one hydrophilic monomer,the contact lens characterized by having on-eye movement with blinking and producing less than about 10% corneal swelling during a period of continuous wear of 7 days including normal sleep periods.
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Accused Products
Abstract
An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
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Citations
21 Claims
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1. A silicone hydrogel contact lens comprising a core polymeric material formed from polymerizable materials including:
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(a) at least one siloxane-containing macromer or monomer; and (b) at least one hydrophilic monomer, the contact lens characterized by having on-eye movement with blinking and producing less than about 10% corneal swelling during a period of continuous wear of 7 days including normal sleep periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification