Question

If a person is.Using concave lens what kind of defect in.Vision is he suffering from

Answer 1

heya mate

Then the person is using the Convex lens.

The convex lens is used to correct the Hypermetropia (Far -sightedness)

Hypermetropia is the defect of vision in which a person sees faraway objects clearly but cannot see the nearby objects.

The image is formed behind retina in Hypermetropia.

Causes:

1) The distance between the eye lens and retina decreases on account of either shortening of eyeball or flattening of lens.

2)Weak action of ciliary muscles causes low converging power of lens.

Hope it helps you!

Answer 2

Myopia or short sightedness.