First slide

The optical instruments

Question

A person is suffering from the defect astigmatism. Its main reason is

Moderate

A

Distance of the eye lens from retina is increased
B

Distance of the eye lens from retina is decreased
C

The cornea is not spherical
D

Power of accommodation of the eye is decreased

Solution

When cornea of eye is not spherical, then human eye is suffered with astigmatism.

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