Question

Write the importance of ciliary muscles in the human eye. Name the defect of vision that arises due to gradual weakening of the ciliary muscles in old age. What type of lenses are required by the persons suffering from this defect to see the object clearly.

Answer 1

Ciliary muscle helps in accommodation of the eye lens (changes in shape of pupil) for clear vision
Presbyopia is the defect of vision that arises due to gradual weakening of the ciliary muscles in old