MacuShield®, a meso-zeaxanthin, zeaxanthin and lutein food supplement, derived from marigolds.

Scientists have long known that the yellow colour, or pigment, at the macula comes from the carotenoids, lutein, zeaxanthin, and meso-zeaxanthin.
These plant compounds which are antioxidants neutralise free radicals originating from smoking, pollution, fried foods and most importantly blue light and oxidative stress. Furthermore, they help protect the eye by absorbing damaging blue light, which is present in sunlight, car headlights and television screens, amongst other sources.
As blue light is part of normal vision, and oxygen use is required for life, free radical damage is the cost of living, and is therefore unavoidable.