Eat Right Practice Exam 2025 – The Comprehensive All-in-One Guide to Master Your Exam!

Vitamin A plays a crucial role in maintaining good vision. It is a key component of rhodopsin, a pigment found in the retina that is essential for low-light and color vision. This vitamin helps in the conversion of light into electrical signals, which are then transmitted to the brain, enabling us to see. A deficiency in vitamin A can lead to night blindness and other vision problems, emphasizing its importance in eye health.

While other vitamins also contribute to overall health, they do not specifically target vision as effectively as vitamin A does. For example, vitamin B12 is important for nerve function and the production of red blood cells, but it does not have a direct influence on vision. Vitamin C acts as an antioxidant and supports overall eye health, particularly in protecting against cataracts, but it is not directly involved in the biochemical processes of vision like vitamin A. Similarly, vitamin D has various roles in maintaining health, including bone health and immune function, but it does not play a pivotal role in visual processes. Thus, vitamin A stands out as the essential vitamin for maintaining good vision.