Which statement about malnutrition-induced night blindness is most accurate?
A) The impaired vision is caused by reduced cone function.
B) Visual pigment content is reduced in cones more than rods.
C) Vitamin supplements can reverse degenerative changes.
D) The most common cause is vitamin D deficiency.

Question

Quizplus · Accepted Answer

Night blindness caused by malnutrition is primarily due to a deficiency in vitamin A, not vitamin D. Vitamin A is crucial for the maintenance of photoreceptors in the eye, especially the rods, which are responsible for vision in low light conditions. Supplementation with vitamin A can reverse the night blindness and other degenerative changes in the eye caused by its deficiency.

Which Statement About Malnutrition-Induced Night Blindness Is Most Accurate