Question

Cataract is the major cause of blindness, which is also caused by damage to the cornea. It

occurs more often in old age. As one starts growing old, the lens of the eye hardens, loses

its transparency and becomes opaque. It obstructs the light rays from entering the eye.

2. The onset of cataract blurs the vision. Sometimes, the cataract patients see multiple images

instead of a single object image. Because of the gradual development of cataract, the

afflicted person loses his/her vision and the world becomes dark to him/her.

3. The development of cataract is a complex process. However, the following factors can be

attributed to its information. Cataract generally develops in old age but sometimes, children

are born with cataract because of hereditary defect. Eye injuries too, can cause cataract.

4. People exposed to sunrays for longer periods develop cataract earlier than others.

Researchers opine that the smoke inhaled while smoking carries substances internally

damaging the eyes.

5. Ultraviolet radiation, invisible to the human eye, is linked to skin cancer. The victim loses

vision and the world becomes dark to him.

Attempt any eight of the following questions on the basis of the passage you have read:

1) What is the major cause of blindness?

2) When does cataract generally occur?

3) Why does the lens of the eye become opaque in old age?

4) How does one detect cataract in early stages?

5) Give any two factors which are responsible for the formation of cataract?

6) How does cataract affect its victim ultimately?

7) Which type of cancer is caused by ultraviolet radiation?

8) How is smoking responsible for the development of cataract?

9) Find the word from the para 1 that means ‘that through which light cannot enter’.​

Answer 1

Answer:

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