Question

Q- What is Presbyopia ?
Q- What is dioptres?

ANS CORRECTLY ONLY..

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Answer 1

Answer:

1) Presbyopia is that defect of vision due to which an old age person cannot see the nearby objects clearly due to loss of power of accommodation of the eye. In old age , the ciliary muscles becoming weak and the eye lens loses some of its elasticity and the eye loses its power of accommodation.

2) dioptre of power of a lens is defined as the unit of measuring the power of optical lens Or curved mirror which is equal to the reciprocal of the focal length. ... 1 dioptre is equal to 1/m where m is the focal length. Basically dioptre is the SI unit of optical power of the lens

Explanation:

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your friend nishu

Answer 2

Explanation:

Presbyopia is the gradual loss of your eyes' ability to focus on nearby objects. It's a natural, often annoying part of aging.

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