Q. 234.0( 4 Votes )

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Answer :

(a Myopia is an eye-defect in which a person is unable to see the distant object but can see clearly the nearby objects.

The various causes of myopia are:

1. It is caused due to elongation of eye ball

2. It is caused due to decrease in the focal length of eye lens.

Myopia can be corrected by usage of a concave lens of suitable power.

(b) The Ray diagram which shows the Myopic correction is:

(d) There are millions of people who are blind and can’t see. Camps for eye donation on can help in that as if cornea of the eyes are removed within 6 hours duration of death of a person, then the cornea can be transplanted to the patients who are suffering with corneal blind. If people takes initiatives of donating their eyes, they can save two corneal blind person by donating an eye to each. These camps are to be promoted so that people are encouraged to take the step of eye donation and also awareness should be created regarding it. Moreover, people are required to be made aware about these camps and eye donation by writing slogans, writing poems, skits etc.

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