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jyl jyl is online now
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Join Date: Jan 2002
Location: Nor California & Pac NW
Posts: 24,783
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50.9 y/o. Hanging on to that 0.1 as long as I can .

Amazing invention, glasses. Revolutionized life for many , many people. Eye docs have the highest benefit/cost ratio in the medical profession, as far as patients are concerned.

What happened to people with bad eyes, before corrective lenses were invented? In the Middle Ages and before?

Or was the incidence of bad eyesight lower then ?
Old 03-04-2014, 04:37 PM
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