define presbyopia...
ash0223:
hi
here also you are disturbing me if you are not talking to me
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Answered by
11
long-sightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age.
leave arguing it's disturbing me
i am telling you what is given in my book
i am not disturbing you
what it's given in book either your or my book is wrong.
bye man
i have ncert book so it not wrong it may be your book is wrong
bye
good night
I think long sightdeness and what you are saying is same good night
no
Answered by
6
it is a defect in which we are not able to see the things which are kept far away from us and the things which are kept near by us For correction we use bi focal lens which contains both concave and convex lens
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