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“Lutein and its twin, zeaxanthin, are the only carotenoids that are found in the lens and in the macula, which is the central part of the retina and therefore most vulnerable to light damage,” says Tufts University’s Elizabeth Johnson.
“They absorb harmful visible light from the sun, which protects the lens, retina, and other eye tissues.”
So should you take a lutein supplement to help preserve your vision? Some key evidence: