In old age farsightedness is a defect of eye in man, in which
A
Eye ball becomes short
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B
Eye ball becomes elongated
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C
Lens becomes less elastic
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D
Lens become more spherical
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Solution
The correct option is D Lens becomes less elastic Presbyopia is caused by an age related process. It occurs due to a gradual thickening and loss of flexibility of the natural lens inside the eye. Changes in the lens curvature progressively cause diminished ability to focus on near objects.