Testing for which of the following can detect cataracts or problems of the retina even before the sharpness of the patient's vision is impaired?

A) Hyperopia
B) Myopia
C) Presbyopia
D) Color blindness
E) Contrast sensitivity

Contrast Sensitivity

The ability of the visual system to distinguish between light and dark areas of a visual image.

Hyperopia

A vision condition, also known as farsightedness, where distant objects can be seen more clearly than close ones.

Myopia

A common vision condition also known as nearsightedness, where distant objects appear blurry while close ones are seen clearly.