Which vitamin is most required for eye?

Vitamin A is most required for eye health. It is essential for the functioning of the cornea, the clear outer layer of the eye, and for the production of a pigment called rhodopsin, which is necessary for vision in low light. Vitamin A deficiency can lead to night blindness, a condition in which a person has difficulty seeing in dim light. In severe cases, vitamin A deficiency can also lead to permanent blindness.