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The Age-Related Eye Disease Study ( AREDS) was a clinical trial sponsored by the National Eye Institute that ran from 1992 to 2001. [1] The study was designed to: investigate the natural history and risk factors of age-related macular degeneration (AMD) and cataracts, and. evaluate the effects of high doses of antioxidants and zinc on the ...
Lutein ( / ˈljuːtiɪn, - tiːn /; [2] from Latin luteus meaning "yellow") is a xanthophyll and one of 600 known naturally occurring carotenoids. Lutein is synthesized only by plants, and like other xanthophylls is found in high quantities in green leafy vegetables such as spinach, kale and yellow carrots. In green plants, xanthophylls act to ...
8.7% global prevalence in 2020 [ 2] Macular degeneration, also known as age-related macular degeneration ( AMD or ARMD ), is a medical condition which may result in blurred or no vision in the center of the visual field. [ 1] Early on there are often no symptoms. [ 1] Over time, however, some people experience a gradual worsening of vision that ...
Meso-Zeaxanthin ( 3R,3′S-Zeaxanthin) is a xanthophyll carotenoid, and is one of the three stereoisomers of zeaxanthin. The meso form is the second most abundant in nature, after 3R,3′R-zeaxanthin, which is produced by plants and algae. [1] meso -Zeaxanthin has been identified in specific tissues of marine organisms [2] and in the macula ...
Natural occurrence. Zeaxanthin is the pigment that gives paprika, corn, saffron, wolfberries (goji), and many other plants their characteristic colors of red, orange or yellow. [2] [18] Spirulina is also a rich source and can serve as a dietary supplement. [25] Zeaxanthin breaks down to form picrocrocin and safranal, which are responsible for ...
Xanthophyll. The characteristic color of egg yolk results from the presence of a xanthophyll pigment typical in color of lutein or zeaxanthin of the xanthophylls, a division of the carotenoids group. Xanthophylls (originally phylloxanthins) are yellow pigments that occur widely in nature and form one of two major divisions of the carotenoid ...
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