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Re: Gas Permeable Contact Lense

Posted on January 21, 2009, 5:48 pm by Canadian Association of Optometrists

Posted in Contact Lenses

Sonya Jackson wrote:

I wear gas perm contact lenses and I just got a new pair in Oct 08. For some reason when I do a hard blink or close my eyes for rest, when I open them I have a film on my contacts and have to take them out and rinse them off. Is this a serious concern? Also, I never experienced this in the past.

Canadian Association of Optometrists's response:

Dear Sonya, Regarding the film on your contact lenses, I must assume that the material used to make your new lenses is not the same as your previous lenses. There is a wide range of materials used to make gas permeable contact lenses. Each has unique properties when it comes to “wetability”, and resistance to deposits. Furthermore, some materials work well in certain individuals, and poorly in others. Our own tear film is often what determines compatibility with various materials. It may be that a simple polishing of your lenses solves the problem, but I’m thinking that you may require a different material, or lid care to improve your tear film. Dr. DesGroseilliers.

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