Which of the following Vitamin deficiencies causes Night Blindness that leads to complete blindness in human beings?

The correct answer is Vitamin A.

Key Points

• Vitamin A deficiency is a leading cause of night blindness in humans.
• Night blindness, also known as nyctalopia, is a condition where individuals have difficulty seeing in low light or darkness.
• If left untreated, severe Vitamin A deficiency can lead to complete blindness.
• Vitamin A is essential for the production of rhodopsin, a pigment in the retina that helps the eye detect light.
• Common sources of Vitamin A include liver, dairy products, fish, and orange or yellow vegetables like carrots and sweet potatoes.

 Additional Information

• Vitamin D
  • Vitamin D is crucial for calcium absorption and bone health.
  • Deficiency in Vitamin D can lead to rickets in children and osteomalacia in adults.
  • Sources include sunlight exposure, fortified foods, and fish.
• Vitamin E
  • Vitamin E acts as an antioxidant, protecting cells from damage.
  • Deficiency is rare but can cause nerve and muscle damage.
  • It is found in foods such as nuts, seeds, and green leafy vegetables.
• Vitamin C
  • Vitamin C is essential for collagen synthesis and immune function.
  • Scurvy is caused by a deficiency in Vitamin C.
  • Sources include citrus fruits, tomatoes, and green vegetables.