Solved UPSC CDS/OTA Question
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Q · Health and Disease medium · 45s
Which vitamin deficiency causes night blindness?
TopicHealth and Disease
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Vitamin A is essential for synthesizing rhodopsin, a pigment in the retina responsible for low-light vision. Deficiency results in impaired vision during dusk or darkness, known as night blindness, which can progress to total blindness if untreated.
Final Answer: Option C - Vitamin A