Oysters are one of the best sources of zinc;just one oyster provides nearly all of your recommended daily value. So how does this mineral preserve your eyesight? Zinc helps the body manufacture melanin, a pigment that helps protect eyes from the harmful effects of ultraviolet light. And there’s evidence that it helps slow the progress of macular degeneration if you’ve already been diagnosed with it. Best bet: Stay away from raw oysters, which can be contaminated with potentially deadly bacteria. Other sources of zinc: Crab, pork, beef, chicken, lobster Try this: “For a quick appetizer, bake oysters in their shells and top with salsa verde,” Maugans says.