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Question

Myopia occurs due to:
  1. Increase in the focal length of eye lens
  2. Decrease in the distance between retina and lens
  3. Decrease in the focal length of the eye lens
  4. Increase in the distance between retina and lens

A
Decrease in the distance between retina and lens
B
Increase in the focal length of eye lens
C
Decrease in the focal length of the eye lens
D
Increase in the distance between retina and lens
Solution
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Myopia is the term used to define short sightedness. Light from a distant object forms an image before it reaches the retina. This is because the eye ball is too large, or the cornea or crystalline lens is too strong. This results in decrease in focal length of eye lens, whereas the distance between retina and lens is always constant.

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