Lutein, zeaxanthin and omega-3 increases macular pigment
The protective pigment in the macula of the eye contains lutein and zeaxanthin; carotenoids which must come from diet. In this study, 145 people with dry AMD took a placebo or a combination of 10 mg lutein, 1 mg zeaxanthin, 100 mg DHA, 30 mg EPA, 60 mg vitamin C, 20 mg vitamin E, 10 mg zinc, and 0.25 mg copper, or double these dosages per day.  After 12 months, macular pigment decreased in the placebo group but increased by 20 percent in the lower-dose supplement group, and by 28.4 percent in the higher-dose group.

Reference: Graefes Arch Clin Exp Ophthalmol. 2013 Dec;251(12):2711-23. Epub 2013 May 22.
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