A person who suffers from protanopia would be said to
A) have poor visual acuity.
B) confuse yellow with blue.
C) lack "blue" cones.
D) have "red" cones filled with "green" photopigment.
E) perceive a blue sky as green in color.

Question

Quizplus · Accepted Answer

Protanopia is a type of color blindness where there is a lack of red cones in the eye. However, it's more accurately described as the red cones having the same photopigment as the green cones, leading to confusion between red and green colors, not that the "red" cones are filled with "green" photopigment. This was a simplification to fit the choices provided.

A Person Who Suffers from Protanopia Would Be Said to