Pine Bark Extract (Pycnogenol) for Eye Health

Research suggests that Pine Bark Extract (Pycnogenol) may offer benefits for eye health, though the evidence base remains limited and somewhat mixed. A 2024 review compiling findings from 39 randomized, double-blind, placebo-controlled trials — considered a rigorous study design — reported beneficial effects across multiple health domains including eye health, with proposed mechanisms involving antioxidant activity, anti-inflammatory effects, and improved blood vessel function. However, a 2013 laboratory and animal study produced more complicated findings: isolated lens tissue exposed to pycnogenol showed signs of toxicity and clouding, while diabetic rats given the extract orally developed less severe cataracts and showed reduced markers of blood sugar-related protein damage, suggesting the compound may behave differently in a living system than in isolated tissue. Taken together, the current evidence is preliminary, and readers should be aware that the broader review does not isolate eye-specific trial data in detail, making it difficult to draw firm conclusions about this particular application without further targeted research.