Method for treating ophthalmic lenses

a technology for ophthalmic lenses and treatment agents, which is applied in the field of treatment methods for ophthalmic lenses, can solve the problems of un uniform coating of the lens surface with the treatment agent, and achieve the effect of reducing the handling steps and the accompanying costs

Inactive Publication Date: 2009-06-11
REYNOLDS GER M +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]This invention recognized that it may be desirable to effect attachment of the treatment agent to the lens surfaces while the lens is contained in a package, for example, to reduce material handling steps and the accompanying costs associated therewith. And if one employs a solution, containing the treatment agent, that is ophthalmically compatible, this solution may serve as the final packaging solution, and the heat sterilization of the package and its contents can serve to effect chemical attachment of the treatment agent to the lens surfaces.

Problems solved by technology

However, problems were encountered in that the surfaces of the lens were not uniformly coated with the treatment agent, especially the lens surface in contact with the recess bottom.

Method used

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  • Method for treating ophthalmic lenses
  • Method for treating ophthalmic lenses
  • Method for treating ophthalmic lenses

Examples

Experimental program
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Effect test

first embodiment

[0080]FIGS. 1 to 4 illustrate a blister package. Package 1 includes a substrate 3 including recess 2 formed therein, recess 2 sized and configured to hold an individual contact lens 5 therein. In the illustrated embodiment, recess 2 is a concave recess with a flat bottom 6. Bottom 6 includes three parallel, longitudinal ridges 7 thereon. Ridges 7 preferably have a height of at least 0.2 mm, more preferably at least 0.4 mm. As seen in FIG. 4, the anterior surface of contact lens 5 rests on at least one of ridges 7 when the package is oriented as in FIG. 4. Without these ridges, the anterior lens surface would rest on flat bottom 6, which could lead to non-uniform coating of the contact lens, especially this anterior surface of the lens.

[0081]After contacting the contact lens with the treatment agent solution, contact lens 5 is contained in recess 2 and immersed in solution. Recess 2 is then sealed with lidstock, i.e., by sealing the lidstock with heat to raised surface 9. The package...

second embodiment

[0082]FIG. 5 illustrates a blister package. Package 11 includes a substrate 13 including recess 12 formed therein. In this illustrated embodiment, recess 12 has a somewhat oval-shaped flat bottom 16, and the bottom includes four longitudinal ridges 17 thereon.

third embodiment

[0083]FIGS. 6 and 7 illustrates a blister package. Package 21 includes a substrate 23 including recess 22 formed therein. In this illustrated embodiment, recess 22 is a concave recess, i.e., a rounded bowl shape. The bottom includes five parallel, longitudinal ridges 27 thereon.

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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.

Description

BACKGROUND OF THE INVENTION[0001]This application claims benefit of provisional patent application No. 61 / 012,855 filed on Dec. 11, 2007 which is incorporated by reference herein.[0002]This invention provides a method for treating ophthalmic lenses in its package with an organic surface treatment agent.[0003]It is often desired to improve the surface characteristics of an ophthalmic lens. For example, in the case of intraocular lenses, the surfaces of the lenses may be rendered more biocompatible, for the purpose of reducing or eliminating epithelial cell growth on the lens. Also, intraocular lenses are often placed in the eye with an intraocular lens inserter which has surfaces that contact the lens while it is extruded against these surfaces; the lens surfaces may be modified to become more lubricious so as to lower the coefficient of friction for contacting the lens inserted. In the case of contact lenses, the lens surfaces may be made more wettable by tear film or less resistant...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65B63/08
CPCB65B25/008B29D11/00067
Inventor REYNOLDS, GER M.ROCHE, EOINCONNOLLY, RICHARDCARDIFF, JOHN J.BOLAND, BRENDAN
Owner REYNOLDS GER M
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