Q. Night blindness occurs due to deficiency of

A
vitamin A
B
vitamin K
C
vitamin B
D
vitamin D
Solution:
  • Night blindness, also called nyctalopia, failure of the eye to adapt promptly from light to darkness that is characterized by a reduced ability to see in dim light or at night.
  • It occurs as a symptom of numerous congenital and inherited retinal diseases or as a result of vitamin A deficiency.
  • Retinol is the main circulating form of vitamin A in blood and plasma.
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