Deficiency of which vitamin in the diet is most commonly linked to poor vision in dim light (night blindness)?

Correct option is B

The correct answer is: (B) Vitamin A

• Night blindness (nyctalopia) is most commonly caused by a deficiency of Vitamin A, which is essential for the production of rhodopsin, a light-sensitive pigment in the retina.

• Without enough Vitamin A, the eyes cannot adapt well to low-light conditions, leading to poor vision at night.

Information Booster:

• Vitamin A is a fat-soluble vitamin stored in the liver.

• Key sources include carrots, spinach, dairy products, and fish liver oil.

• Deficiency may also lead to xerophthalmia (dry eyes) and Bitot’s spots.

• Vitamin A is also crucial for immune function and cell growth.

• Children and pregnant women are at higher risk of deficiency.

Additional Information:

• Vitamin C – Important for wound healing and collagen synthesis, but not related to night vision.

• Vitamin B12 – Involved in nerve function and red blood cell formation; its deficiency leads to anemia, not night blindness.

• Vitamin D – Essential for bone health and calcium absorption, unrelated to vision in low light.