Question

What is myopia, hypermentropia and cataract

Answer 1

These are the defects of eyes.
Myopia :In this case ,the eye can see nearby objects clearly but distant objects appear indistinct
Hypermetropia: ln this defect human eye can see distant objects clearly but cannot see nearby objects distinctly

I don't have any idea about cataract

Hope it'll help

Answer 2

These all are the eye diseases faced by human. Myopia is the disease in which we are able to see nearby things more properly than the far.

In Hypermetropia  the case is opposite i.e we are able to see far object more clearly than near objects.

In Cataract the lens becomes cloudy or foggy as result the person is unable to see clearly .

Hope you will understand.