Question

2.1. The defect of vision happens in old age making the
muscles inflexible is ?​

Answer 1

Explanation:

Presbyopia. This defect of vision usually happens in old age when ciliary muscles become weak and can no longer adjust the eye-lens. The muscles become inflexible in this condition and cannot see nearby objects clearly. The near-point of an old person having presbyopia is much more than 25 cm.

Answer 2

Answer:

Presbyopia .

Explanation:

prasbyopia is corrects to bearing spactackles having covex lens.