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Some individuals have high macular pigment scores after taking lutein supplements. Is lutein the only carotenoid needed to protect healthy vision?

The macula contains both lutein and Zeaxanthin and the eye preferentially accumulates Zeaxanthin in the center of the macula where the highest density of visual cells reside. Supplementing with lutein will increase macular pigment; however, the most crucial area of the macula may have deficient protection without Zeaxanthin and recent science demonstrates unique and beneficial differences between the two carotenoids.