Question

A person can see distant objects clearly but cannot see near objects clearly. This defect is known as:

• A. short sightedness
• B. long sightedness
• C. presbyopia
• D. myopia

Answer 1

Answer:

B. long sightedness

• The defect in which a person can see distant objects clearly but cannot see nearby objects clearly is called long-sightedness or hypermetropia.

• In a hypermetropic eye, the image of a nearby object is formed behind the retina instead of on it, which causes near objects to appear blurry.

• This happens because the eyeball is too short or the lens has too long a focal length.

• It can be corrected by using a convex (converging) lens.

• Short-sightedness (Myopia): A defect where a person can see near objects clearly but cannot see distant objects clearly.

• Presbyopia: An age-related condition where the eye gradually loses its ability to focus on nearby objects due to the hardening of the lens.