Question

A man can read the number of a distant bus clearly but is not able to read a book clearly. Which defect of the eye is he suffering from?
(A) Myopia
(B) Hypermetropia
(C) Cataract
(D) Astigmatism

Answer 1

The condition of our eyes in which the image, after being focused by the lens in our eyes are formed behind the retina causes us to clearly see far away objects, but we are unable to focus on objects close by. This condition is called hypermetropia.

Complete Step by Step Solution
When light enters our eye, the lens focuses the light entering and thus forms an image on our retina, which consists of nerves that transmits that signal to our brain. But if the axial length of our eyeball is too small or the lens in our eye is too short, then in that case, the light rays are focused behind the retina and the image is not perceived by our brain clearly.
Because of these conditions, a person may be able to see clearly the things that are far away but become unable to see the things that are close.
This specific condition of the eye is called hypermetropia of far-sightedness.
So the man can read the distant bus number clearly and can’t read the books let us know that he is suffering from hypermetropia.

Therefore, option B. is correct.

Additional Information The condition of hypermetropia could be corrected by using glasses or contact lenses. Though glasses are easier to manage by the contact lenses provide a wider range of vision. Some surgeries or laser procedures can also help to cure hypermetropia.

Note
All newborns are usually hypermetropic. But as they grow up, the eyeballs elongate and as a result it decreases as the age increases. It is also usually very common for people over the age of 40. In some rare cases hypermetropia may be caused due to diabetes or problems with blood vessels in the retina.