A prospective study of carotenoid and vitamin A intakes and risk of cataract extraction in US women.
Chasan-Taber L, Willett WC, Seddon JM, Stampfer MJ, Rosner B, Colditz GA, Speizer FE, Hankinson SE. A prospective study of carotenoid and vitamin A intakes and risk of cataract extraction in US women. Am J Clin Nutr. 1999 Oct; 70(4):509-16.