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    January 7, 2011
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 Vision Training Pinhole Eyeglasses
Vision Training Pinhole Eyeglasses
Help to strengthen and retrain ocular muscles
 

Does the size and amount of pinholes matter?

I've seen other types of pinhole glasses for much less, and much more. Does the size and shape of the pinholes matter?
3 years, 9 months ago
by
nk123
Sacramento
 
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