Why one should include the vitamin A rich eatables in their diet? What are the main sources of vitamin A?

Lack of vitamin A in foodstuff is responsible for many eye troubles. Most common amongst them is night blindness. One should, therefore, include in the diet components which have vitamin A. raw carrots, broccoli and green vegetable such as spinach (palak) methi, amaranth and cod liver oil are rich in vitamin A. eggs, milk, curd, paneer, butter, ghee and fruits such as papaya, banana, mango, apple, dates etc. also contain plenty of vitamin A.