Question

A young man has to hold a book at arm’s length to be able to read it clearly. The defect of vision is:
A. Astigmatism
B. Myopia
C. Presbyopia
D. Hypermetropia

Answer 1

Hint: It is a condition where distance vision is clear but nearby objects appear blurred.
This defect can be corrected by using a convex lens.

Complete answer:
In the given question, we are supplied with the following data:
There is a person who has to hold a book at arm's length to be able to read it clearly.
So, let us discuss a bit about the problem as mentioned in the question.
The problem as mentioned above arises owing to inadequate accommodation by the lens, this blurred effect is due to incoming light being focused behind, instead of on the retina wall.
Hypermetropia (long-sightedness) is a common eye disorder where objects nearby appear blurred, but when looking at something further away, the vision is clearer.

Hence, the required answer is Hypermetropia.

So, the correct answer is “Option D”.

Additional Information:
Hypermetropia: The term used to describe being long sighted is hypermetropia, also called hyperopia. If you are hypermetropic, the image is created behind the retina of a nearby object. This suggests that light is concentrated too far back into the eye causing blurred objects that are close up to appear.

Note:
- A person with hypermetropia/hyperopia or long vision can clearly see objects far away from them but not near them.
- The shape of the eye causes this - the eyeball is slightly too short.
- It is corrected with lenses that are ‘plus’ or convex in form by spectacles or contact lenses.