Evidence supporting the use of: Berry
For the health condition: Eye Problems

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Berries—specifically bilberry (Vaccinium myrtillus)—have a long tradition of use in herbal medicine for supporting eye health and treating various eye problems. The reputation of bilberry for improving night vision reportedly dates back to World War II, when British Royal Air Force pilots were said to consume bilberry jam to enhance their night vision, although historical evidence for this story is weak. Traditional herbalists have used bilberry and related berries for conditions such as eye strain, poor night vision, and retinal health, largely due to their content of anthocyanins, which are antioxidant pigments. However, scientific validation for these claims is limited. A number of small clinical studies and laboratory experiments have investigated bilberry extracts, focusing on their anthocyanin content and potential effects on the retina, blood flow, and oxidative stress. Results have been inconsistent, and systematic reviews have generally concluded that there is insufficient high-quality evidence to support the use of bilberry or other unspecified berries for the prevention or treatment of most eye conditions such as cataracts, glaucoma, or diabetic retinopathy. While berries are generally healthy foods and contain beneficial antioxidants, robust clinical evidence for their specific benefit in eye health remains lacking. In summary, the use of berries for eye problems is primarily supported by tradition rather than strong scientific evidence.

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