Question

state the causes of hypermetropia how this difficult can be corrected

Answer 1

Hypermetropia is cause because - the focal length of the eye lens is too long or the eye ball has become too small .

this defect can be corrected by using a convex lens of appropriate power.

Answer 2

Hypermetrophia can be caused due to :

Eyeball becomes small

Focal length increases.

This can be corrected by using convex lens as it converges the light rays.