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Method for treating ophthalmic lenses

a technology for ophthalmic lenses and treatment agents, which is applied in the direction of packaging goods, containers, applications, etc., can solve the problems of un uniform coating of the lens surface with the treatment agent, and achieve the effect of reducing the material handling steps and the accompanying costs

Inactive Publication Date: 2009-06-11
CONNOLLY RICHARD +6
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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

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first embodiment

[0077]FIGS. 1 to 5 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. As seen in FIG. 4, the anterior surface of contact lens 5 rests on bottom 6 when the package is oriented as in FIG. 4. This can lead to non-uniform coating of the contact lens, especially this anterior surface of the lens resting on the recess bottom. These problems were overcome by employing packages with recesses including grooves in the bottoms thereof, to ensure better flow of the solution around the lens surfaces. Accordingly, bottom 6 includes three parallel, longitudinal grooves 7 therein. Grooves 7 preferably have a depth of at least 0.2 mm, more preferably at least 0.4 mm.

[0078]After contacting the contact lens with the treatment agent solution, contact lens 5 is contained in recess 2 and immersed in sol...

second embodiment

[0079]FIG. 6 illustrates a blister package. Package 11 includes a substrate 13 including recess 12 formed therein. In this illustrated embodiment, recess 12 is a concave recess, i.e., a rounded bowl shape. The bottom includes three interconnected, longitudinal grooves 17 therein.

third embodiment

[0080]FIG. 7 illustrates a blister package. Package 21 includes a substrate 23 including recess 22 formed therein. In this illustrated embodiment, recess 22 has a somewhat oval-shaped flat bottom, and the bottom includes four longitudinal grooves 27 therein.

[0081]Once the package recess contains the contact lens immersed in the final packaging solution, the recess is then sealed with lidstock, i.e., by sealing the lidstock with heat. As an example, the lidstock is sealed to raised surface 9 in FIGS. 1 to 5. The package and its contents may now be sterilized, preferably by heat sterilization such as autoclaving. The recess has a depth greater than a height of the lens, and a sufficiently large volume, that the lens is completely immersed in the final packaging solution. Preferably, the recess is filed with at least 0.5 ml of final packaging solution, more preferably at least 1 ml, and most preferably at least 1.2 ml.

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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 grooves.

Description

BACKGROUND OF THE INVENTION[0001]This application claims the benefit of provisional patent application No. 61 / 012,856 filed 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 resistan...

Claims

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Application Information

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IPC IPC(8): B65B3/04A45C11/00
CPCB65B25/008B29D11/00067B65D2585/545
Inventor CONNOLLY, RICHARDREYNOLDS, GER M.CARDIFF, JOHN J.KELLY, ALANROCHE, EOINBOLAND, BRENDANMULQUEEN, DAVID
Owner CONNOLLY RICHARD
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