Question

add a note on defects of eye​

Answer 1

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This defect can be corrected by using a convex (converging) lens of appropriate focal length. When the object is at N', the eye exerts its maximum power of accommodation.

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...There are four types of defect of the Eye:

Myopia,

Hypermetropia.

Presbyopia.

Astigmatism.

Answer 2

This defect can be corrected by using a convex (converging) lens of appropriate focal length. When the object is at N', the eye exerts its maximum power of accommodation.

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