Q. Myopia is due to

A
elongation of eye ball
B
irregular change in focal length
C
shortening of eye ball
D
older age
Solution:

Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. This causes light rays to focus at a point in front of the retina, rather than directly on its surface.
Concave lens is used for myopia.

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