exact answers only
This is a type of eye defect
Near sightedness or Myopia is a defect of eye in which the objects present near can be seen clearly but the far ibjects can not be seen by the person suffering from this disease.
It can arise due to the following reasons :-
1. Increased length of eye ball.
2. More curvature of the eye lens.
It can be cured by the use of convex mirror.
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