Question Detail

PHY 104 The Human Eye Objective Question

Question

Astigmatism is a vision defect that causes blurred vision due to what specific characteristic of the eye?
Options
A The lens becoming opaque.
B The surface of the cornea having a distorted, non-spherical shape.
Correct Answer
C The eyeball being too long.
D The optic nerve being damaged.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The text clearly defines astigmatism: 'Astigmatism refers to a defect in which the surface of the cornea is not spherical but has a somewhat distorted shape.'

Hint

The name 'astigmatism' itself relates to a point not being a point (stigma).

Question Info