Question

write the types of vision in the human eye explain them with corrections ​

Answer 1

Answer:

The Human eye works on the refraction of light through a natural convex lens made up of transparent living material and enables us to see things around us. And the ability to see is called vision, eyesight or drishti. Human eye consists of cornea, iris, pupil, ciliary muscles, eye lens, retina and optical nerve.

There are three common defects of vision. They are:

There are three common defects of vision. They are:1) Myopia (Short-sightedness or Near-sightedness)

There are three common defects of vision. They are:1) Myopia (Short-sightedness or Near-sightedness)2) Hypermetropia (Long-sightedness or Far-sightedness)

There are three common defects of vision. They are:1) Myopia (Short-sightedness or Near-sightedness)2) Hypermetropia (Long-sightedness or Far-sightedness)3) Presbyopia

myophia:

The defect of an eye in which it cannot see the distant objects clearly is called myopia. A person with myopia can see nearby objects clearly.

correction:

Myopia or short-sightedness can be corrected by wearing spectacles containing concave lens. This is because when a concave lens of suitable power is used for the myopic eye then the concave lens first diverge the parallel rays of light coming from distant object

hypermetrophia:

Hypermetropia or long-sightedness is a defect of an eye where a person cannot see nearby objects clearly

correction:

Correction of Hypermetropia: The convex lens forms a virtual image of the object (lying at normal near point N) at the near point N’ of this eye.

presbyophia:

This defect of vision usually happens in old age when ciliary muscles become weak and can no longer adjust the eye-lens. The muscles become inflexible in this condition and cannot see nearby objects clearly

correction:

Presbyopia can be corrects by wearing spectacles having convex lens.

Hope it helps u i know it is long but in 1 reading u will got this things