The yellow carotenoid antioxidants Lutein & Zeaxanthin are used to support eyes health and visual functioning. They offer oxidative stress protecting and molecular health support. Their primary functions are to protect the macula of the eye from blue light damage, scavenge reactive oxygen that might be harmful and improve visual acuity. They may also prevent some age-related diseases that cause vision impairment and blindness. Lutein & Zeaxanthin are best taken with some fat such as olive oil as they should be better ingested that way.