Question

Explain the conecpt of presbyopia and how to correct it.

Answer 1

=> PRESSBIOPIA is the defect of vision in which a person cannot se nearby object as well as far objects clearly..
=> This defect can be corrected by using bifocal length..

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Answer 2

hey buddy!

Here is your answer;

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Presbyopia: It is effect in which person cannot see near as well as far object clearly, This near and far object appears blur.

Causes: Due to age factor ciliary muscles becomes weak and it cannot change its focal length.

Correction: In order to correct it by focal lens is used in which upper part is concave and lower part is convex.

➡hope this helps you deaR ✌✌✌.