Synopsis

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

Anthocyanins, a group of flavonoid compounds responsible for the red, purple, and blue colors in many fruits and vegetables (such as bilberries, blueberries, and blackcurrants), have a history of use in supporting eye health, particularly for improving night vision and reducing eye fatigue. The interest in anthocyanins for eye problems originated in part from anecdotal reports during World War II, where British pilots reportedly consumed bilberry jam to enhance their night vision. However, subsequent research has shown mixed results regarding these claims.

Modern scientific studies have investigated the potential of anthocyanins to protect the retina from oxidative stress, reduce inflammation, and improve microcirculation in ocular tissues. Some small-scale human trials and animal studies suggest that anthocyanin-rich extracts may help alleviate symptoms of eye fatigue and support visual function, especially under low-light conditions. However, the quality and size of these studies are generally limited, and systematic reviews have concluded that while there is some evidence for benefit, it is not robust or conclusive.

Overall, the use of anthocyanins for eye health is supported by a combination of traditional use and emerging, but not definitive, scientific evidence. More large-scale, well-designed clinical trials are needed to confirm their efficacy for specific eye problems such as night vision improvement or prevention of eye diseases.

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