Question

Name the eye disease related to the deficiency of vitamin A.

Answer 1

Vitamins are the organic molecules needed by our body in micro-quantities for the proper functioning of the body. There are 13 vitamins needed for the proper functioning of our body. Vitamin A is good for vision, cell growth and immune system.

Complete answer:
The vitamins are essential for the proper functioning of our body. Some vitamins are produced in our body but many vitamins are needed from the external sources in the form of food or as dietary supplement. One important vitamin needed by our body is vitamin A.
Vitamin A is also known as retinol. It is a fat soluble vitamin which is not produced in our body but needs to be taken externally. The sources of vitamin A are dairy products, liver, fish, carrots, broccoli, squash, cantaloupe, fortified cereals.
Benefits of Vitamin A to our body:
1)It is important for normal vision, reproduction and the immune system.
2)It also helps in proper functioning of organs like heart, lungs, kidneys.
Deficiency of Vitamin D:
1)The deficiency of vitamin D causes night blindness. It is a vision impairment which leads to poor vision at night or in dim light.
2)It can lead to infertility and delayed growth.
3)Respiratory infections.
4)Inflamed skin.

Note: The pigment present in our eye responsible for vision in dim light is rhodopsin. Night blindness is caused due to the defect in rods. Vitamin D is the precursor of rhodopsin. Its deficiency leads to night blindness. Night blindness can be cured naturally by eating food rich in vitamin D.