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Myopia and Its Correction

What are the ...

Question

What are the two most common defects of vision (or defects of eye) ? How are they corrected ?

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Solution

The two most common defects of vision are myopia and hypermetropia. Myopia can be corrected by using a concave lens and hypermetropia can be corrected by using a convex lens.

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Similar questions

What are the two defects of eyes in which near vision and far vision are exclusively affected?

Q. You know that myopia is a common refractive defects of vision. A person with this defect can clearly see only objects that are near. Using concave lens of suitable power this defect is corrected.
i) Mention the other two types of defects.
ii) Explain how they can be corrected.

Q. (a) List three common refractive defects of vision. Suggest a way of correcting these defects.
(b) About

45 l a c

people in developing countries are suffering from corneal blindness. About

30 l a c

children below the age of

12

years suffering from this defect can be cured by replacing the defective cornea with the cornea of a donated eye. How and why can students of your age involve themselves to create awareness about this fact among people?

Q. An old man cannot see objects closer than 1 m from the eye clearly. Name the defect of vision he is suffering from. How can it be corrected? Draw ray diagram for the (i) defect of vision and also (ii) for its correction.

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