Why does the power to clearly see near objects and far-off objects diminish with age ? Name the defects that are likely to arise in eye in such a condition.

Explanation

The defect arises due to the gradual weakening of the line ciliary muscles and diminishing flexibility of the eye lens with ageing. Thus, the eye gradually loses its power of accomodations. This conditions of defect is called presbyopia. Such people may often require bifocal lenses to correct this defect.