Question

what are the vision defects and it's corretres​

Answer 1

there are three type of vision defect they are myopia, hypermetropia hand presbyopia.

first myopia is also called as for nearsightedness it can be corrected by using a concave lens

second hypermetropia it is also called as farsightedness it can be corrected by using convex lens

third is presbyopiait can be caused by age or weakening of ciliary muscles you can be corrected by using a bifocal lens

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