What term describes a person who can see nearby objects clearly but cannot bring distant objects into focus?

What term describes a person who can see nearby objects clearly but cannot bring distant objects into focus?

• A. Near-sighted
• B. Far-sighted
• C. Astigmatism
• D. Plane mirror

Answer: (A)

When light from distant objects enters the eye, it should be focused onto the retina. If the eye focuses those distant rays in front of the retina, distant objects appear blurry while nearby objects stay clear. This condition is called near-sightedness (myopia). It happens because the eyeball is effectively too long or the cornea is too curved, so light from far away converges too soon. Close objects, whose light rays are already near the eye’s natural focal point, still land on the retina and look sharp. A concave lens is a common correction because it spreads light outward a bit, moving the focal point back onto the retina. In contrast, far-sightedness describes the opposite problem—difficulty with near objects, not distant ones. Astigmatism causes blurry vision at various distances due to an irregularly curved cornea or lens. A plane mirror isn’t related to vision defects; it’s just a flat-reflection optical surface.

When light from distant objects enters the eye, it should be focused onto the retina. If the eye focuses those distant rays in front of the retina, distant objects appear blurry while nearby objects stay clear. This condition is called near-sightedness (myopia). It happens because the eyeball is effectively too long or the cornea is too curved, so light from far away converges too soon. Close objects, whose light rays are already near the eye’s natural focal point, still land on the retina and look sharp. A concave lens is a common correction because it spreads light outward a bit, moving the focal point back onto the retina.

In contrast, far-sightedness describes the opposite problem—difficulty with near objects, not distant ones. Astigmatism causes blurry vision at various distances due to an irregularly curved cornea or lens. A plane mirror isn’t related to vision defects; it’s just a flat-reflection optical surface.