Principal Investigator: M. Cristina Leske, MD, MPH. Coordinating Center: Stony Brook University, Stony Brook, NY: M. Cristina Leske, MD, MPH; Barbara Nemesure, PhD; Suh-Yuh Wu, MA; Leslie Hyman, PhD; Xiaowei Li, PhD; Shu-Hong Xie, MS; Lixin Jiang, MS; Kasthuri Sarma; Melinda Santoro; Koumudi Manthani. Data Collection Center: Ministry of Health, Bridgetown, Barbados, West Indies: Anthea M. S. Connell, FRCS, FRCOphth; Anselm Hennis, MRCP(UK), PhD; Ann Bannister, MB, BS, DO; Muthu A. Thangaraj, MB, BS, DO; Coreen Barrow; Patricia Basdeo; Kim Bayley; Anthanette Holder. Fundus Photography Reading Center: The Johns Hopkins University, Baltimore, Md: Andrew P. Schachat, MD; Judith A. Alexander; Noreen B. Javornik, MS; Cheryl J. Hiner; Deborah A. Phillips; Reva Ward; Terry W. George. Local Advisory Committee: Trevor Hassell, MBBS, FRCP, FACC, GCM (Department of Cardiology) and Henry Fraser, FACP, FRCP(UK), PhD, GCM (Chronic Diseases Research Centre); School of Clinical Medicine and Research, University of the West Indies: Clive Gibbons, FRCS(Ed), FRCP, FRCOph(UK) (Department of Ophthalmology); Queen Elizabeth Hospital, Barbados, West Indies.