High refractive index, high Abbe compositions
US-12071497-B2 · Aug 27, 2024 · US
Silicone hydrogel contact lenses
US9322958B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9322958-B2 |
| Application number | US-201313740921-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2013 |
| Priority date | Aug 27, 2004 |
| Publication date | Apr 26, 2016 |
| Grant date | Apr 26, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 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. 2. The silicone hydrogel contact lens of claim 1 which has an advancing contact angle of about 70° or less. 3. The silicone hydrogel contact lens of claim 1 which has an advancing contact angle of about 60° or less. 4. The silicone hydrogel contact lens of claim 1 which has a contact angle hysteresis of less than 13° . 5. The silicone hydrogel contact lens of claim 1 , which is not surface treated. 6. The silicone hydrogel contact lens of claim 1 , which comprises a molded lens body having an anterior surface and a posterior surface, the surfaces of the molded lens body being modified by plasma treatment, ozone treatment, corona discharge, chemical reaction, or graft polymerization to increase wettability of the surfaces of the molded lens body. 7. The silicone hydrogel contact lens of claim 1 , which comprises a polymeric lens body comprising units of at least two different siloxanes. 8. The silicone hydrogel contact lens of claim 7 , wherein at least one of the siloxanes is monofunctional. 9. The silicone hydrogel contact lens of claim 1 , which has an oxygen permeability of at least 130 barrers and a modulus of 0.4 MPa to 0.8MPa.
Assignees
Inventors
Classifications
- G02B1/043Primary
Contact lenses · CPC title
Polysiloxanes · CPC title
Homopolymers or copolymers of acrylic acid esters · CPC title
Homopolymers or copolymers of methacrylic acid esters · CPC title
the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels · CPC title
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Frequently asked questions
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- What does patent US9322958B2 cover?
- 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.
- Who is the assignee on this patent?
- Coopervision Int Holding Co Lp
- What technology area does this patent fall under?
- Primary CPC classification G02B1/043. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).