Coating compositions and methods for reducing edge glare in implantable ophthalmic lenses

• US 6,406,739 B1
• Filed: 12/06/2000
• Issued: 06/18/2002
• Est. Priority Date: 01/12/2000
• Status: Expired due to Term

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Universal Ltd.
• Inventors: Sheets, John W. Jr., LeBoeuf, Albert R.
• Primary Examiner(s): Beck, Shrive P.
• Assistant Examiner(s): Markham, Wesley
• Application Number:
  US09/730,969
• Time in Patent Office: 559 Days
• Field of Search: 427/2.1, 427/162, 427/164, 427/2.24, 427/256, 427/284, 351/160.R, 351/160.M, 351/158, 351/165, 351/166, 623/6.11, 623/6.17, 623/6.62
• US Class Current: 427/2.24
• CPC Class Codes: A61F 2/16 Intraocular lenses
• CPC Class Codes: A61L 27/34 Macromolecular materials
• CPC Class Codes: C08L 33/06 of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical

Abstract

Hydrophilic coatings for implantable ophthalmic lenses are disclosed. The coatings, which are applied to the edge surface of the ophthalmic lens, comprise a hydrophobic (meth)acrylic polymer and a hydrophilic polymer. When hydrated, the coatings reduce or eliminate edge glare.

Claims

1. A method for reducing edge glare in an implantable ophthalmic lens having an optic edge surface comprising the step of applying a hydrophilic coating material to the optic edge surface wherein the coating material consists essentially of an ophthalmically acceptable hydrophobic (meth)acrylic polymer and an ophthalmically acceptable hydrophilic polymer in an amount sufficient to reduce or eliminate edge glare when the coating material is hydrated, and wherein the coating material has a T_g less than 37°

C. when hydrated.

2. The method of claim 1 wherein the hydrophilic polymer is selected from the group consisting of polyhydroxyethyl methacrylate;

polyacrylamide;

polyglyceryl methacrylate and polyvinyl pyrrolidone.

3. The method of claim 2 wherein the hydrophilic polymer is polyvinyl pyrrolidone.

4. The method of claim 1 wherein the hydrophilic polymer has a weight average molecular weight in the range of 2,500-100,000.

5. The method of claim 4 wherein the hydrophilic polymer is polyvinyl pyrrolidone having a weight average molecular weight of 10,000.

6. The method of claim 1 wherein the amount of the hydrophilic polymer in the coating material is about 5-50% (wt.).

7. The method of claim 1 wherein the coating material has a hydrated water content of about 20-70%.

8. The method of claim 1 wherein the hydrophobic (meth)acrylic polymer comprises a monomer of the formula

wherein:

X is H or CH₃;

m is0-6;

Y is nothing, O, S, or NR, wherein R is H, CH₃, C_nH_2n+1 (n=1-10), iso-OC₃H₇, C₆H₅, or CH₂C₆H₅; and

Ar is any aromatic ring which can be unsubstituted or substituted with CH₃, C₂H₅, n-C₃H₇, iso-C₃H₇, OCH₃, C₆H₁₁, Cl, Br, C₆H₅, or CH₂C₆H₅.