Out of the 600 or more carotenoids found in nature, only three are found in the macula of the eye—lutein, RR-zeaxanthin and RS (meso)-zeaxanthin. These play a critical role in visual health. But what exactly is their role and what are the consequences of low dietary intake? And, how do these factors impact different age groups? This white paper takes a fresh look at macular carotenoids to evaluate their importance across age groups—from early development to adulthood—and to evaluate market opportunities as consumers become increasingly aware of the importance of early and consistent intake of these nutrients for a lifetime of healthy vision.