Question

State two main causes of a person developing near sightedness. How can this defect be corrected

Answer 1

$\textbf{Myopia }$:

A human eye is myopic if it can see the near by objects clearly but unable to see far off objects clearly.

$\textbf{Causes }$:

Elongation of eye ball

The excessive curvature of cornea.

$\textbf{Correction}$:

Concave lens of suitable focal length is used to correct myopia or short sightedness.

$\textbf{Refer to attachment for clarification !}$

Answer 2

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