Emma has tritanopia. When she looks around at the world, she sees shades of red and green. Her defect is caused by a lack of
A) red cones.
B) green cones.
C) yellow cones.
D) blue cones.
E) white cones.

Question

Quizplus · Accepted Answer

Tritanopia is a type of color vision deficiency where individuals have difficulty distinguishing between blue and yellow hues. This condition is caused by the absence or malfunction of the blue cones (short-wavelength cones) in the retina. Therefore, the correct answer is D) blue cones.

Emma Has Tritanopia