Evidence supporting the use of: Vitamin A (unspecified)
For the health condition: Eyesight (poor)
Synopsis
Source of validity: Scientific
Rating (out of 5): 4
Vitamin A is scientifically validated as essential for maintaining healthy eyesight, particularly in the context of night vision and the prevention of certain eye disorders. The active form of vitamin A, retinal, is a critical component of rhodopsin, a protein in the retina that absorbs light and is necessary for scotopic (low-light) vision. Deficiency in vitamin A is a well-documented cause of night blindness (nyctalopia) and, in more severe cases, can lead to xerophthalmia, a spectrum of eye conditions that can result in irreversible blindness if untreated. Numerous clinical studies and public health data have established that vitamin A supplementation in deficient populations reduces the incidence of blindness and visual impairment, particularly in children.
However, in individuals with adequate vitamin A intake, supplementation has not been shown to further improve vision or prevent common age-related eye conditions such as macular degeneration or cataracts. The World Health Organization and numerous national health agencies recommend vitamin A supplementation primarily to prevent deficiency in at-risk groups, such as children in developing countries. Thus, the use of vitamin A for supporting eyesight is grounded in robust scientific evidence, but primarily as a preventive measure against deficiency-related vision problems rather than as a general enhancer of eyesight.
More about Vitamin A (unspecified)
More about Eyesight (poor)
Other ingredients used for Eyesight (poor)
alpha-caroteneanthocyanins
berry flavor
beta-carotene
bilberry
blueberry
carrot
cryptoxanthin
turmeric
lutein
mixed carotenoids
omega-3 fatty acids
vitamin A
vitamin C
vitamin E
zeaxanthin
zinc
anthocyanidins
anthocyanosides
beta-zeacarotene
berry
Bioflavonoids
Carotene (unspecified)
Eyebright
Flavonoids
Other health conditions supported by Vitamin A (unspecified)
AcneAcquired Immune Deficiency Syndrome
Age Spots
Aging (prevention)
Anemia
Burns and Scalds
Conjunctivitis
Cuts
Diarrhea
Eye Infections
Eye Problems
Eyes (red or itching)
Eyesight (poor)
Infection
Infection (bacterial)
Infection (viral)
Leukemia