This image depicts a cross section of the human eye. Which structure contains the highest concentration of cones?

A) fovea
B) retina
C) lens
D) cornea

Question

This image depicts a cross section of the human eye. Which structure contains the highest concentration of cones?

A) fovea 
B) retina 
C) lens 
D) cornea

Quizplus · Accepted Answer

The fovea is a small area at the center of the retina that contains the highest concentration of cones, which are responsible for clear central vision and color perception. The retina contains both rods and cones, but the fovea is specialized for high visual acuity and has the highest density of cones. The lens and cornea both refract light to focus it onto the retina, but they do not contain any photoreceptor cells.

This Image Depicts a Cross Section of the Human Eye