Question

A person may suffer from both myopia and hypermetropia defects.
What is this condition called ?
(b)
When does it happen?
(c)
Name the type of lens often required by the persons suffering from
this defect. Draw labelled diagram of such lenses.
​

Answer 1

Explanation:

this condition is known as presbyopia....

This defect of vision usually happens in old age when ciliary muscles become weak and can no longer adjust the eye-lens.....

bifocal lens are used by the people suffering from this disease.......

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