Which vitamin is mainly involved in maintaining healthy vision?

Vitamin A is primarily known for its crucial role in maintaining healthy vision. It is a vital component of rhodopsin, a protein in the eyes that is necessary for the perception of light. Without sufficient vitamin A, the body cannot effectively produce rhodopsin, which can lead to difficulties in seeing in low light conditions, a condition known as night blindness.

Moreover, vitamin A contributes to the maintenance of the cornea, the outer covering of the eye, and is involved in maintaining the health of the retina. It also aids in the production of tears, which are essential for keeping the eyes moist and preventing dryness. This nutrient is found in animal products, such as liver and fish, as well as in plant foods in the form of carotenoids, which the body can convert into vitamin A.

Other vitamins, such as vitamin C and vitamin E, do have supportive roles in eye health, primarily through their antioxidant properties, but they do not directly influence vision in the way that vitamin A does. Vitamin D is crucial for bone health and immune function, while vitamin K is involved in blood clotting processes.