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Myopia and Its Cure

What are the ...

Question

What are the causes of hypermetropia?

A

Lengthening of eyeball

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B

Shortening of eyeball

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C

Increase of focal length in eye lens

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D

Decrease of focal length in eye lens

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Solution

The correct option is C
Increase of focal length in eye lens

Hypermetropia or farsightedness is the eye defect when the image is formed behind the retina so that even though distant objects are clearly seen, nearer objects cannot be seen. This is due to: (i) Increase of focal length in eye lens, (ii) Shortening of eyeball.

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