Just like you slather on sunscreen, don your shades every time you head outside. “UV rays cause cumulative damage leading to conditions such as cataracts,” says Marioneaux. “Wear sunglasses on sunny or hazy days because UV rays can penetrate clouds.” Inexpensive sunglasses are fine as long as they block 100 percent of UVA and UVB rays. Wraparound styles are best so the sun can’t enter from the side. And even if your contacts have UV protection, add shades for more thorough coverage.