Silicone hydrogel contact lens
First Claim
Patent Images
1. A contact lens comprising:
- a soft lens body having an anterior surface and a posterior surface at least one of which is not surface treated, the lens body comprising at least one hydrophilic silicon-containing polymeric material and having a water content of at least about 30% by weight, 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 lens body and a receding contact angle of the lens body.
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Accused Products
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.
134 Citations
39 Claims
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1. A contact lens comprising:
a soft lens body having an anterior surface and a posterior surface at least one of which is not surface treated, the lens body comprising at least one hydrophilic silicon-containing polymeric material and having a water content of at least about 30% by weight, 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 lens body and a receding contact angle of the lens body.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 32, 33, 34)
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12. A contact lens comprising:
a soft lens body having an anterior surface and a posterior surface at least one of which is not surface treated, the lens body comprising at least one hydrophilic silicon-containing polymeric material and having a water content of at least about 30% by weight, a receding contact angle of 49°
or less, a contact angle hysteresis of 45°
or less, and a modulus of less than about 0.8 MPa, wherein the contact angle hysteresis of the lens body is the difference between an advancing contact angle of the lens body and the receding contact angle of the lens body.- View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 35, 36, 37)
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20. A contact lens comprising:
a soft lens body having an anterior surface and a posterior surface which are not surface treated, the lens body comprising at least one hydrophilic silicon-containing polymeric material and having a water content of at least about 30% by weight, a modulus less than 1 MPa, an advancing contact angle and a receding contact angle, the sum of the advancing contact angle and the receding contact angle being in a range of more than 94°
to less than 117°
, and a contact angle hysteresis of less than 30°
, wherein the contact angle hysteresis is the difference between an advancing contact angle of the lens body and a receding contact angle of the lens body.- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 38, 39)
Specification