Preparation of antimicrobial contact lenses with reduced haze using swelling agents
First Claim
1. A method of preparing an antimicrobial lens comprising a metal salt, wherein said method comprises the steps of(a) treating a cured lens, with a solution comprising salt precursor and a swelling agent,(b) treating the lens of step (a) after removing it from the solution of step (a) with a solution comprising a swelling agent for an appropriate period of time of about 10 to about 30 seconds, and(c) treating the lens of step (b) after removing it from the solution of step (b) with a solution comprising a metal agent and a swelling agent wherein the swelling agents used in each step can be the same or different from the swelling agent used in each other step.
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Abstract
This invention relates to antimicrobial lenses containing metals and methods for their production.
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Citations
15 Claims
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1. A method of preparing an antimicrobial lens comprising a metal salt, wherein said method comprises the steps of
(a) treating a cured lens, with a solution comprising salt precursor and a swelling agent, (b) treating the lens of step (a) after removing it from the solution of step (a) with a solution comprising a swelling agent for an appropriate period of time of about 10 to about 30 seconds, and (c) treating the lens of step (b) after removing it from the solution of step (b) with a solution comprising a metal agent and a swelling agent wherein the swelling agents used in each step can be the same or different from the swelling agent used in each other step.
Specification