IP Library › Patent Application 12244333
Patent Application
App. No. 12/244,333

METHOD FOR TREATING OPHTHALMIC LENSES

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Quick Facts
Patent No.
US None
App. No.
12/244,333
Abstract

A method of treating an ophthalmic lens in a package involves: placing the lens and an aqueous solution in a recess of package, the solution including an organic surface treatment agent that attaches to anterior and posterior surfaces of the lens; and sealing the recess of the package with lidstock and sterilizing the package contents. The bottom of the recess includes raised projections.

Claims (21)

1 . A method of treating an ophthalmic lens in a package, comprising:

placing the lens and an aqueous solution in a recess of package, the solution comprising an organic surface treatment agent that attaches to anterior and posterior surfaces of the lens; and

sealing the recess of the package with lidstock and sterilizing the package contents;

wherein a bottom of the recess includes raised projections.

2 . The method of claim 1 , wherein the surface treatment agent attaches to the lens surfaces by at least one of covalent bonding, ionic attachment, and hydrogen bonding.

3 . The method of claim 1 , wherein the surface treatment agent attaches to the lens surfaces by covalent bonding.

4 . The method of claim 1 , wherein the lens surfaces are ionically charged, and the surface treatment agent has an opposite, ionic charge.

5 . The method of claim 1 , wherein the package contents are sterilized by autoclaving, and autoclaving effects attachment of the surface treatment agent to the lens surfaces.

6 . The method of claim 1 , wherein attachment of the surface treatment agent is effected by heating the solution while in contact with the lens surfaces in the recess.

7 . The method of claim 1 , wherein the anterior surface of the lens contacts a portion of the raised projections.

8 . The method of claim 1 , wherein the projections have a height of at least 0.2 mm.

9 . The method of claim 8 , wherein the projections have a height of at least 0.4 mm.

10 . The method of claim 1 , wherein the recess has a depth greater than a height of the lens, and a sufficient volume of solution is placed in the recess so that the lens is completely immersed in the solution.

11 . The method of claim 10 , where the volume of the solution is at least 0.5 ml.

12 . The method of claim 11 , where the volume of the solution is at least 1 ml.

13 . The method of claim 1 , wherein the lens is a hydrogel contact lens.

14 . The method of claim 1 , wherein the lens is a silicone hydrogel contact lens.

15 . The method of claim 1 , wherein after placing the lens and the solution in the recess of the package, the recess is sealed with the lidstock without removing the solution.

16 . The method of claim 1 , wherein after placing the lens and the solution in the recess of the package, the solution is removed with a portion of the surface treatment agent remaining attached to the lens surface, and an aqueous packaging solution is added to the recess prior to sealing the recess with lidstock.

17 . The method of claim 1 , wherein the bottom includes several parallel, longitudinal projections thereon.

18 . The method of claim 1 , wherein the bottom includes several raised dot-like bumps.