A few other nutrients are also keys to improving eyesight. Among them are lutein and zeaxanthin, which are carotenoids found in the retina. You can also find them in leafy green vegetables, broccoli, zucchini, and eggs. Lutein and zeaxanthin can also be taken in supplement form. These carotenoids help protect the macula by improving pigment density in that part of the eye, and absorbing ultraviolent and blue light. Whether you’re playing racquetball, working in your garage, or doing a science experiment in school, it’s vital that you protect your eyes with appropriate eyewear. Tough, protective eyewear is essential if there is a risk of chemicals, sharp objects, or materials such as wood shavings, metal shards, or even a stray elbow during a basketball game, entering your eye.