Probably nothing: If by weakening eyesight you mean "presbyopia" which is changing focal length with aging, nothing. Gimmicks which have you exercise your eyes are of no value. It is caused by stiffening of the lens as you age. Other causes of decreasing eyesight, such as macular degeneration or retinopathy, can sometimes be treated by an ophthalmologist.
Answered 1/31/2012
6.2k views
Weak vision: If you have a visual problem you must see an ophthalmologist to determine the cause and then treat the condition. This can prevent further visual change and stabilize the problem.
Answered 10/26/2018
258 views
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A doctor has provided 1 answer
A doctor has provided 1 answer
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5 doctors weighed in across 2 answers
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