White color stain on the outer edge of the RGP

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bayngen@gmail.com - 25 Apr 2007 15:24 GMT

I have been replacing my RGP every year because after a while they
form a white film on the outer edge of the lens which I am not able to
clean. It bothers my vision if I blink my eye and the lens is sliding
over the eye. Also, I have noticed this stain appearing after I go for
a long drive (out of State) and the air contantly hitting my eyes,
making my eyes watery. Or if I am outdoor a lot and my eyes get
wattery. Is there a way to have these stains removed at home....Some
one said use baking soda?

I use at home Boston Cleaner to clean and then Boston Simplicity to
store my lenses overnight. Why these white stains when they start
appearing on my RGP, I am not able to clean them off. Do I need to use
some other cleaner along with Boston one? Is baking soda Ok to use?
Please help...

Thanks a lot.

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Mike Tyner - 25 Apr 2007 19:51 GMT

>I have been replacing my RGP every year because after a while they
> form a white film on the outer edge of the lens which I am not able to
> clean. It bothers my vision if I blink my eye and the lens is sliding
> over the eye.

Quite possibly a calcium compound depositing on your lenses. You might try
soaking in vinegar overnight and then cleaning.

Baking soda works OK with SOFT lenses but it will scratch GPs badly.

I'd mention the deposit and ask if a different material might be better, at
your next examination.

-MT, OD

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