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HELP?!?
Can someone who is higher than a yellow-belt in google-fu please help me find the answer to the burning question:
What percentage of the population over the age of 30 [this is flexible -- it could be 25, 35, whatever, just not over 50] needs corrective eyewear?
Probably easiest to find the answer for the US population, but any population will do.
(Yes, I tried, and came up with bupkus.)
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