Complete color blindness results in a perception of the world only in shades of black and white and is caused by
A)cones that are missing or function abnormally.
B)rods that fail to function under higher levels of illumination.
C)excessive pigmentation of the cornea.
D)a lens that has lost its elasticity and can no longer focus the image appropriately on the retina.

Question

Quizplus · Accepted Answer

Complete color blindness, also known as achromatopsia, is primarily caused by the absence or malfunctioning of cones in the retina. Cones are responsible for color vision, and their dysfunction leads to an inability to perceive colors, resulting in a world seen only in shades of gray.

Complete Color Blindness Results in a Perception of the World