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प्रश्न
Give Reason:
Older people require glasses to read and write.
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उत्तर
In old age the flexibility of the lens declines and the lens becomes less convex or opaque leading to weakness of eyesight.
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संबंधित प्रश्न
What is myopia?
A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?
The defect of vision in which the eye-lens of a person gets progressively cloudy resulting in blurred vision is called:
(a) myopia
(b) presbyopia
(c) colourblindness
(d) cataract
By closing the eyes and gently pressing them by your palms, you may see some specks of brilliant light. How do you get this sensation while there is no light entering your eyes?
You do not enjoy watching a movie from a very short distance from the screen in a cinema hall. Why?
Have a look at the posture of this girl who is reading a book and answer the questions which follow:
Name the problem she is facing.
State one role of ciliary muscles in the human eye.
Distinguish between the following pair of words:
Myopia and hypermetropia
Explain the Term: Hypermetropia
Give Technical Term:
The type of lens used to correct myopia is
