Silicone hydrogel contact lenses
First Claim
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1. A silicone hydrogel contact lens comprising:
- a polymeric lens body that is free of a polyvinylpyrrolidone-containing interpenetrating network, said contact lens having a water content of at least 30% by weight, an oxygen permeability of at least 120 barrers, a contact angle hysteresis of less than 15°
, and a modulus of less than about 0.8 MPa, wherein the contact angle hysteresis is the difference between an advancing contact angle of the silicone hydrogel contact lens and a receding contact angle of the silicone hydrogel contact lens.
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Abstract
Silicone hydrogel contact lenses are provided which have reduced modulus and contact angle properties, and which have acceptable wettabilities for use in daily wear and extended or continuous wear applications.
124 Citations
9 Claims
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1. A silicone hydrogel contact lens comprising:
a polymeric lens body that is free of a polyvinylpyrrolidone-containing interpenetrating network, said contact lens having a water content of at least 30% by weight, an oxygen permeability of at least 120 barrers, a contact angle hysteresis of less than 15°
, and a modulus of less than about 0.8 MPa, wherein the contact angle hysteresis is the difference between an advancing contact angle of the silicone hydrogel contact lens and a receding contact angle of the silicone hydrogel contact lens.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification