Which of the following conditions is brought on by a lack of Vitamin A ?

Correct option is A

A deficiency of Vitamin A leads to night-blindness, a condition where an individual has difficulty seeing in dim light. Vitamin A is essential for maintaining healthy vision, skin, and immune function. The retina of the eye requires retinol (active Vitamin A) to produce rhodopsin, a pigment that absorbs light.

Information Booster:

1. Sources of Vitamin A: Carrots, spinach, sweet potatoes, fish oils, and eggs.
2. Other Deficiency Symptoms: Dry eyes (xerophthalmia), corneal ulceration, and reduced immune response.
3. Types of Vitamin A: Retinol (animal sources) and beta-carotene (plant sources).
4. Daily Requirement: 600–700 micrograms for adults.
5. Risk Groups: Pregnant women and children in developing countries.
6. Prevention: Fortification of food with Vitamin A.

Additional Knowledge:

• Beri-Beri (b): Caused by Vitamin B1 (Thiamine) deficiency.
• Scurvy (c): Caused by Vitamin C deficiency.
• Bone Pain (d): Associated with Vitamin D deficiency.

Key Points:

• Night-blindness is often the first sign of Vitamin A deficiency.
• Severe cases can lead to blindness due to corneal damage.