Synopsis

Source of validity: Scientific
Rating (out of 5): 5

Vitamin A is scientifically validated for supporting and treating certain eye problems, particularly those related to vitamin A deficiency. Vitamin A is essential for the formation of rhodopsin, a pigment in the retina that enables vision in low-light conditions. Deficiency in vitamin A can lead to night blindness and, in severe cases, to xerophthalmia, a condition characterized by dryness of the conjunctiva and cornea, which can progress to blindness if untreated. Numerous clinical and epidemiological studies have demonstrated that vitamin A supplementation can prevent and treat these eye disorders, especially in populations at risk of deficiency.

The World Health Organization (WHO) and other health authorities recommend vitamin A supplementation in children and at-risk groups to prevent blindness and reduce mortality. In addition, vitamin A plays a vital role in maintaining the health of the cornea and conjunctival membranes. However, there is no strong evidence that vitamin A supplementation improves vision or treats eye conditions in individuals who are not deficient. Excess supplementation can be toxic and is not recommended for the general population.

In summary, the use of vitamin A (mixed forms, including retinol and carotenoids) for the prevention and treatment of deficiency-related eye problems is strongly supported by scientific evidence.

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