Question

what is presbyopia ? answer

Answer 1

hey guys


here is ur answer :-


presbyopia :- it is a very dangerous disease in every human disease

in this disease people not watch far distance and not watch near thing also

I hope it may help u

the doctor suggests to glass which is made up of both lens concave and convex


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Answer 2

hey mate!!

here is u r answer !!

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this defect is generally found in generally found in elderly person.due to stiffening of ciliary muscle ,eye looses much of its accommodating power.as a result distinct as well as nearby objects can not be seen.

for its remedy two separate lens or a biofocal lens is used.


ok help u