Question

what is myopia and hypermetropia ? explain

Answer 1

Answer:

These are the defects of the eye

Explanation:

MYOPIA :the observer can see near objects clearly than distant

HYPERMETROPIA :just opposite of myplopia

Answer 2

MYOPIA( near or short sightedness):

Myopia is a condition in which the near objects can be seen clearly but the distant objects appear blurred ..Reasons for myopia are: (i) the eye ball is lengthened from front to back..(ii) the lens is too curved. The defect can be corrected by using concave lens. Power of glasses used is mentioned in minus "-"

HYPERMETROPIA:

It is a condition in which there is a difficulty in seeing near objects. Reasons for this are : (i) due to the shortening of eyeball (ii) the lens is too flat . A convex lens is required to correct it . Power of the glasses used is mentioned in plus "+"