Evidence supporting the use of: Vitamin A (vitamin A acetate)
For the health condition: Eyesight (poor)

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Synopsis

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

Vitamin A, particularly in the form of vitamin A acetate (retinyl acetate), is scientifically validated for its role in supporting eyesight and preventing certain forms of poor vision. Vitamin A is an essential nutrient required for the formation of rhodopsin, a pigment in the retina that is necessary for low-light (night) vision. Deficiency in vitamin A can lead to night blindness, and, if severe, to xerophthalmia and ultimately irreversible blindness. The World Health Organization recognizes vitamin A deficiency as a leading cause of preventable blindness in children worldwide. Numerous clinical studies and public health interventions have demonstrated that vitamin A supplementation in populations at risk of deficiency dramatically reduces the incidence of night blindness and other ocular symptoms. However, for individuals with adequate dietary intake of vitamin A, supplementation does not improve vision further or treat refractive errors (such as myopia or hyperopia). The use of vitamin A to support eyesight is therefore strongly supported by scientific evidence, particularly in the context of deficiency states. Its addition to multivitamins or targeted supplementation is standard in areas where deficiency is common, and its role in ocular health is well-established in medical literature and guidelines.

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