Cause of Night Blindness:

Night blindness is caused by the deficiency of Vitamin A.

Explanation:

Vitamin A is a fat-soluble vitamin that is essential for maintaining good vision, healthy skin, and a strong immune system. It is necessary for the formation of a pigment called rhodopsin, which is found in the retina of the eye and helps us see in low light conditions.

When the body doesn't get enough vitamin A, the production of rhodopsin is affected, and as a result, the eyes have trouble adjusting to low light conditions, leading to night blindness.

Night blindness is a condition where a person has difficulty seeing in low light conditions, and it can be a symptom of several underlying conditions, including malnutrition, cataracts, and retinitis pigmentosa.

Vitamin A deficiency is a common cause of night blindness in developing countries, where a lack of access to nutritious food and poor diet quality are prevalent.

Prevention and Treatment:

The best way to prevent night blindness is to maintain a healthy diet that includes foods rich in Vitamin A, such as:

- Liver
- Sweet potatoes
- Carrots
- Spinach
- Red bell peppers
- Mangoes
- Papayas
- Apricots
- Eggs

For those who are already suffering from night blindness due to vitamin A deficiency, treatment involves increasing the intake of vitamin A through diet or supplements.

It is important to note that excessive intake of vitamin A can also be harmful to the body, leading to toxicity, so it is essential to consult a doctor before taking vitamin A supplements.

Night blind Ness occurs due to the deficiency of Vitamin - A. For this we should eat carrot, fish liver oil etc