Vitamin A is essential for maintaining good vision, particularly in low-light conditions. It plays a pivotal role in the production of rhodopsin, a protein in the eyes that enables vision in dim light. Deficiency in vitamin A can lead to night blindness and other vision-related issues. Additionally, this vitamin supports the overall health of the retina and is involved in the maintenance of corneal surfaces. Consuming adequate amounts of fruits and vegetables rich in beta-carotene, such as carrots and sweet potatoes, can help ensure sufficient vitamin A levels.