Synopsis

Source of validity: Scientific
Rating (out of 5): 3

There is moderate scientific evidence supporting the use of fruit and vegetable blends for eye health. Epidemiological studies have consistently shown that diets rich in fruits and vegetables, especially those high in carotenoids such as lutein and zeaxanthin, are associated with a reduced risk of age-related macular degeneration (AMD) and cataracts. These compounds are found abundantly in green leafy vegetables, corn, and various fruits. The protective effects are believed to stem from their antioxidant properties and their ability to filter harmful blue light in the retina. Randomized controlled trials (RCTs), such as the Age-Related Eye Disease Study (AREDS2), have also demonstrated that supplementation with specific carotenoids can slow the progression of AMD. However, the term "proprietary blend" is nonspecific, and efficacy depends on the actual composition and concentrations of the blend. While general fruit and vegetable intake is clearly beneficial for eye health, the evidence for a generic proprietary blend is less direct, as not all blends are standardized or contain clinically relevant doses of effective compounds. Nevertheless, the scientific rationale for using fruit and vegetable extracts to support eye health is moderately strong, particularly when those extracts are rich in carotenoids and polyphenols known to benefit ocular tissues.

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