Question

What is myopia and what is its cause ? With corrected. ?

Answer 1

$\underline{\mathfrak{Answer}}$

A person suffering from myopia can see the nearby objects clearly but cannot see the a myopic eye, the image of distant object is formed in front of retina and not on the

$\bold{myopia}$ (short-sightedness). It is a major defect of human eye which comes in young age. distant object so distinctly, retina itself, as a result the images of distant objects appear blurred. The eye's far point gets shifted from infinity to a point P Cause of myopia : This defect arises due to either of the following two reasons.
( I)The elongation of the eyeball ie., the distance of retina from the eye lens get increased.

(ii) Excessive curvature of the cornea, i.e., the focal length of the eye lens becomes small .

$\bold{Correction\: of\: myopia}$ :
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This defect can be corrected by using a concave (diverging) lens r appropriate focal length (or power). A concave lens forms the image of the distant object at the far point P of the defective eye and thus forms the image of the object on the retina and does not increase sufficiently to accommodate infinity itself .

$\underline{\mathfrak{thanks}}$

Answer 2

myopia is a defect where a person can see near objects clearly but can not see long objects clearly.

cause: excessive curvature of the eye lens and elongation of eyeball.

it can corrected by using concave lens.

thank you ✌