What vitamin deficiency can lead to night blindness?

What vitamin deficiency can lead to night blindness?

• A. Vitamin C
• B. Vitamin B12
• C. Vitamin A
• D. Vitamin D

Answer: (C)

Night blindness is primarily associated with a deficiency in vitamin A. This vitamin plays a crucial role in the production of rhodopsin, a pigment found in the retina that is essential for low-light and night vision. When the body lacks sufficient vitamin A, the synthesis of rhodopsin is impaired, leading to difficulty seeing in dim light or darkness, which manifests as night blindness. In contrast, while vitamins C, B12, and D are important for various bodily functions, they do not directly impact the mechanisms involved in night vision. Vitamin C is essential for collagen formation and tissue repair, vitamin B12 is important for red blood cell formation and neurological function, and vitamin D is primarily involved in calcium metabolism and bone health. None of these vitamins have a direct role in the visual processes tied to night vision, making vitamin A the critical nutrient for preventing night blindness.

Night blindness is primarily associated with a deficiency in vitamin A. This vitamin plays a crucial role in the production of rhodopsin, a pigment found in the retina that is essential for low-light and night vision. When the body lacks sufficient vitamin A, the synthesis of rhodopsin is impaired, leading to difficulty seeing in dim light or darkness, which manifests as night blindness.

In contrast, while vitamins C, B12, and D are important for various bodily functions, they do not directly impact the mechanisms involved in night vision. Vitamin C is essential for collagen formation and tissue repair, vitamin B12 is important for red blood cell formation and neurological function, and vitamin D is primarily involved in calcium metabolism and bone health. None of these vitamins have a direct role in the visual processes tied to night vision, making vitamin A the critical nutrient for preventing night blindness.