Carrot power? study tests if eye vitamins boost sight in healthy people

This study looks at whether taking a daily supplement of lutein, zeaxanthin, and meso-zeaxanthin (natural pigments found in plants) can improve contrast sensitivity—the ability to see subtle differences in light and dark—in healthy Chinese adults aged 35 and older. Over 12 months, 220 participants will either receive the supplement or a placebo. The goal is to see if these nutrients can sharpen vision, even in people without eye disease.