A new study in Experimental Eye Research suggests three macular carotenoids—lutein, zeaxanthin, and mesozeaxanthin—may increase macular pigment ocular density (MPOD) more quickly than previous research has indicated. Among study participants supplementing with Lutemax 2020 marigold extract from OmniActive Health Technologies (Morristown, NJ), researchers observed significant increases to MPOD in as little as eight weeks.