Flavonoids are a diverse group of plant compounds with antioxidant properties, and their potential benefits for eye health have been the subject of several scientific studies. The scientific rationale for using flavonoids to support the eye body system primarily centers on their ability to protect ocular tissues from oxidative stress, which is implicated in the pathogenesis of common eye conditions such as age-related macular degeneration (AMD), cataracts, and diabetic retinopathy.

Research has shown that certain flavonoids, particularly those found in berries, citrus fruits, and tea (such as anthocyanins, quercetin, and catechins), can help maintain retinal health by scavenging free radicals and enhancing blood flow to the retina. Some animal and human studies suggest that flavonoid-rich extracts (e.g., bilberry) may help reduce visual fatigue, improve night vision, and slow the progression of retinal diseases. However, while these findings are promising, the majority of human trials to date have been small, of short duration, or have methodological limitations. Systematic reviews note that while there is a plausible biological mechanism and some supportive evidence, more large-scale, high-quality clinical trials are needed to confirm efficacy.

In summary, there is a moderate level of scientific validation for the use of flavonoids to support eye health, particularly due to their antioxidant and vascular effects, but conclusive evidence for strong clinical benefit is still lacking.