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Question
Write scientific reason.
Presbyopia effect is more common in people over 40 years of age.
Solution
- Focusing power of the eye lens decreases with age.
- Also, with progressing age, ciliary the muscles near the eye lens lose their ability to adjust the focal length of the lens.
- This defect of vision is called as presbyopia.
- As the defect is prnounced by old age, it is more common in people over 40 years of age.
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