CST3 and dry age related macular degeneration: In the Beaver Dam Eye Study, baseline serum cystatin C was associated with increased incidence of dry AMD (OR, 1.16; 95% CI, 1.01–1.35) and exudative AMD (OR, 1.42; 95% CI, 1.03–1.94) after adjusting for age and other risk factors [15].