Scientific research shows that the three nutrients, lutein, meso-zeaxanthin and zeaxanthin, collectively known as macular pigment (yellow colour), are found at the back of the eye, at the macula, near the centre of the retina.
The macula is the specialized part of the eye that is responsible for our detailed central vision. Meso-zeaxanthin is particularly concentrated at the centre of the macula.
Macular pigment is a powerful anti-oxidant. Because the macula is yellow in colour, it absorbs excess blue light and ultra-violet light that enter the eye, and acts as a natural sunblock for this area of the retina.