A defect in the curvature of the cornea or lens results in a condition called
A)emmetropia.
B)hyperopia.
C)myopia.
D)astigmatism.
E)presbyopia.

Question

Quizplus · Accepted Answer

Astigmatism is a condition in which the curvature of the cornea or lens is uneven, resulting in blurred vision at all distances. This is different from myopia (nearsightedness) or hyperopia (farsightedness) which are caused by a defect in the shape of the eye or lens. Presbyopia is a form of farsightedness that typically affects individuals over 40 years of age. Emmetropia refers to normal or perfect vision. Therefore, the correct answer is D)astigmatism.

A Defect in the Curvature of the Cornea or Lens