Visual acuity is highest in the region of the retina called the
A) fovea.
B) optic disc.
C) lens.
D) iris.

Question

Quizplus · Accepted Answer

The fovea is a small area in the center of the retina responsible for high visual acuity because it contains the majority of the eye's cone cells, which are responsible for color vision and perception of fine details. The optic disc is the point where the optic nerve exits the eye and contains no photoreceptor cells, so it is not responsible for visual acuity. The lens and iris play roles in focusing light onto the retina, but they do not directly affect visual acuity.

Visual Acuity Is Highest in the Region of the Retina