Benefits of zeaxanthin include greater eye health and slowing the progress of macular degeneration, according to WebMD. People often take zeaxanthin with lutein, vitamin C and vitamin E to boost the effects.
Zeaxanthin also helps to protect the eyes from ultraviolet rays from the sun. As of 2015, scientists believe that higher levels of zeaxanthin in the eyes may help to improve vision, and even help people see better when glare or dim lights are problematic to vision.
Zeaxanthin is found in many vegetables, and it is a potent antioxidant, explains WebMD. The eyes naturally have a high concentration of zeaxanthin, especially in the retina, lens and macula. Diets that are rich in zeaxanthin appear to protect individuals from eye disease, especially those that develop with age, states WebMD. For example, as of 2015, studies show that people who eat foods with zeaxanthin, such as kale, broccoli and spinach, are up to 50 percent less likely to have cataracts.
The American Optometric Association recommends people get about 2 milligrams a day of zeaxanthin, but too much may cause the skin to turn yellow, reports WebMD. It is easy to get this amount by eating the right foods. For instance, a single serving of broccoli, corn, greens, kale or spinach has enough zeaxanthin to positively affect eye health.