Question

(a) What is hypermetropia?
(b) What are the causes of hypermetropia?
(c) Name the lens used to correct hypermetropia?

Answer 1

Answer:

A. When a person cannot see the near by objects clearly, but can see distant objects clearly this defect of vision is called Hypermetropia.

B. Causes of Hypermetropia are-

..Due to low converging power of eye lens because of its large focal length

.. Due to decrease in length of eye ball

..When eye lens is fully relaxed

C.

Hypermetropia can be corrected using spectacles containing convex lens of suitable power or focal length.

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Answer 2

Answer:

a. Hypermetropia is a disease,people can not see objects situated before near point is called hypermetropia.

b. the causes of hypermetropia are the low converging power of eye lens because of weak action of ciliary muscles.and also abnormal shape of cornea also sometimes.

c. the double Convex lens is used to correct hypermetropia.