The retina, the back of our eyeball, is actually an extension of our central nervous system. It’s an outpouching of the brain during development, and, right in the middle, there’s a yellowish spot. This is what doctors see when we look into your eye with that bright light. That spot, called the macula, is our HD camera, where we get the highest-resolution vision, and it’s packed with lutein (from the Latin luteus for “yellow”).5417 Since levels in the retina can correspond to brain levels, our eyes can be a window into our brain, and indeed the amount of “macular pigment,” which consists of
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