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A member asked:
If eyeglasses did not exist in ancient history, how did people with poor vision see at all?
2 doctors weighed in across 2 answers
Squinting: They probably squinted a lot or used some variant of pinhole glasses to improve sight. Many were likely selected out by their inability to function as well as others in society.
Answered 7/27/2013
5.7k views
Poorly: The first evidence that humans tried to imprve vision was the discovery of magnifying 'pebbles' about 1500 years ago. In ancient times, those with poor vision were untreated. Unfortunately this remains a significant problem in poorer nations where people cannot get or afford glasses.
Answered 3/10/2013
5.3k views
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From last week, I find it is getting more difficult to see without wearing my eyeglasses (even when I read from my laptop screen). But I there are no changes in my vision with them on. Is this normal? I have a prescription of -2.25D?
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