Contact lenses

Patent metadata

Field	Value
Publication number	US-9507172-B2
Application number	US-201414267144-A
Country	US
Kind code	B2
Filing date	May 1, 2014
Priority date	Mar 2, 1998
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

The invention provides silicone hydrogel contact lenses that exhibit reduced back surface debris and reduced incidence of superior epithelial accurate lesions.

First claim

What is claimed is:

1. A silicone contact lens comprising a center stiffness of about 1 psi·mm 2 or less, a crosslinked lens polymer network comprising at least one wetting agent copolymerized therein and an advancing contact angle is less than about 80 degrees.

2. The contact lens of claim 1 , wherein lenticular junction stiffness is about 4 psi·mm 2 or less.

3. The lens of claim 1 , wherein a center stiffness of about 0.5 psi·mm 2 or less and a lenticular junction stiffness of about 4 psi·mm 2 or less.

4. The contact lens of claim 1 , 2 , or 3 , wherein the advancing contact angle is less than about 80 degrees.

5. The contact lens of claim 1 , 2 or 3 , wherein the advancing contact angle is less than about 55 degrees.

6. The lens of claim 4 , wherein the internal wetting agent is selected from the group consisting of polyamides, polylactams, polyimides, polylactones, and combinations thereof.

7. The lens of claim 1 wherein said contact lens is formed from a polymer reaction mixture comprising at least one monomethacryloxypropyl terminated polydimethylsiloxane of the formula:

wherein b is an integer from 0 to 100; R 58 is a monovalent group containing a ethylenically unsaturated moiety; each R 59 is independently a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups; and R 60 is a monovalent alkyl, or aryl group, which may be further substituted with alcohol, amine, ketone, carboxylic acid or ether groups.

8. The lens of claim 7 wherein R 58 comprises a methacrylate moiety; each R 59 is methyl; and R 60 is selected from the group consisting of C 1-10 aliphatic or aromatic group which may include hetero atoms.

9. The lens of claim 8 wherein R 60 is selected from the group consisting of C 3-8 alkyl groups.

10. The lens of claim 9 wherein b is an integer from 8 to 10.

Assignees

• Johnson & Johnson Vision Care

Inventors

• Steffen Robert B
• Turner David C
• Vanderlaan Douglas G

Classifications

• C08L83/04

  Polysiloxanes · CPC title

• G02C7/049 Primary

  Contact lenses having special fitting or structural features achieved by special materials or material structures · CPC title

• C08F230/08

  containing silicon · CPC title

• C09D133/26

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title

• G02B1/043

  Contact lenses · CPC title