Benefits
Macular and eye health
The three macular carotenoids build up macular pigment, the eye's natural blue-light filter, supporting long-term eye health.
Visual performance
The randomized trial cited on this page was conducted in children and measured macular pigment and visual performance; the wider adult macular-pigment (MPOD) literature suggests lutein and zeaxanthin may support visual-performance measures such as glare tolerance and contrast sensitivity.
Antioxidant protection
As carotenoid antioxidants, they protect the retina from light-induced oxidative stress.
Mechanism of action
Macular pigment
Lutein, zeaxanthin, and meso-zeaxanthin accumulate in the macula, filtering harmful blue light and quenching free radicals.
Antioxidant action
The carotenoids scavenge the free radicals generated by light exposure, supporting retinal health.
Clinical trials
Randomized, double-blind, placebo-controlled study of lutein and zeaxanthin on visual and cognitive performance in children aged 5 to 12. (Parekh et al. 2024, Advances in Therapy)
Healthy children aged 5 to 12 years.
In children aged 5 to 12 (10 mg lutein plus 2 mg zeaxanthin, 180 days), supplementation significantly raised macular pigment optical density (MPOD), with accompanying improvements in visual and cognitive performance versus placebo.