Question

Define myopia and hypermetropia and how they are caused and how they can be corrected?

Answer 1

myopia

this is a defect in which we r not able to see far off objects clearly

it is caused due to following reasons

1)elongation of eyeball

2)increase in curvature

hypermetropia

it is a defect in which person can see far-off objects clearly but it is not able to see the nearby objects

it is caused due to

1) shortening of eyeball

2) decrease in curvature

hope it helps u frnd

Answer 2

Myopia:-

a person suffering from myopia or near-sightedness can see nearby objects but cannot see distant objects distinctly.

in a myopic eye, the image of a distant object is formed in front of the retina and not on the retina itself.

to correct a myopic eye, the person has to use spectacles with a concave lens.

Hypermetropia:-

a person suffering form hypermetropia or far sightedness can see far off objects clearly but cannot see nearby objects distinctly.

in a hypermetropic eye, the image of a nearby object is formed behind the retina and not on the retina itself.

to correct a hypermetropic eye, the person has to use spectacles with a convex lens.