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Night blindness is caused by deficiency of-
Question

Night blindness is caused by deficiency of-

A.

Vitamin D

B.

Vitamin C

C.

Vitamin A

D.

Vitamin B

Correct option is C

The correct answer is (c) Vitamin A.
· Night blindness (also known as nyctalopia) is primarily caused by a deficiency of Vitamin A (Retinol).
· This vitamin is essential for maintaining healthy vision, particularly for the production of rhodopsin, a pigment found in the retina that helps the eyes adjust to low light conditions.
· When the body lacks sufficient Vitamin A, the eyes cannot produce enough rhodopsin, leading to difficulties in seeing in dim light or at night.
· Vitamin A deficiency can also lead to more severe eye problems, including xerophthalmia and permanent blindness if not addressed.
Information Booster:
· Rich sources of Vitamin A include carrots, sweet potatoes, spinach, and fish liver oil.
· Children and pregnant women are particularly at risk of Vitamin A deficiency in developing countries.
Additional Information:
· Vitamin D(Calciferol) : Deficiency in Vitamin D can lead to bone diseases like rickets and osteomalacia, but it is not related to night blindness.
· Vitamin C (Ascorbic acid): A deficiency in Vitamin C can lead to scurvy, which affects the skin, gums, and overall immune function, but it does not cause night blindness.
· Vitamin B : Deficiencies in B vitamins can lead to various neurological and metabolic issues, but they are not associated with night blindness.

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