Thus, the planned research project will evaluate two non-invasive markers of exposition on their usability as markers of absorption of lutein and zeaxanthin in blood and macula. In addition, the minimally needed dosage of lutein and zeaxanthin for AMD prevention will be determined to reduce the possible risk of currently recommended doses of these compounds. The project will also present alternatives (kale extract, kale purée) for AMD prevention and to improve vision to be used instead of currently used high-dose supplements.