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Question

Presbyopia is due to the diminishing ability of:


A

ciliary muscles

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B

retina

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C

lens

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D

iris

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Solution

The correct option is A

ciliary muscles


Power of accommodation is the ability of ciliary muscles to adjust the focal length of eye lens by changing its shape. When eye has a defect called presbyopia, this ability of ciliary muscles diminishes. The near point of eye lens becomes greater than 25 cm. This defect is very common in elderly people.


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