http://en.wikipedia.org/wiki/Human_eye
Macular degeneration is especially prevalent in the U.S. and affects roughly 1.75 million Americans each year.Having lower levels of lutein and zeaxanthin within the macula may be associated with an increase in the risk of age-related macular degeneration.Lutein and zeaxanthin act as antioxidants that protect the retina and macula from oxidative damage from high-energy light waves.As the light waves enter the eye they excite electrons that can cause harm to the cells in the eye, but before they can cause oxidative damage that may lead to macular degeneration or cataracts lutein and zeaxanthin bind to the electron free radical and are reduced rendering the electron safe.
Macular degeneration is especially prevalent in the U.S. and affects roughly 1.75 million Americans each year.Having lower levels of lutein and zeaxanthin within the macula may be associated with an increase in the risk of age-related macular degeneration.Lutein and zeaxanthin act as antioxidants that protect the retina and macula from oxidative damage from high-energy light waves.As the light waves enter the eye they excite electrons that can cause harm to the cells in the eye, but before they can cause oxidative damage that may lead to macular degeneration or cataracts lutein and zeaxanthin bind to the electron free radical and are reduced rendering the electron safe.
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