1. The Framingham Eye Study Monograph. An ophthalmological and epidemiological study of cataract, glaucoma, diabetic retinopathy, macular degeneration, and visual acuity in a general population of 2631 adults, 1973–1975;Leibowitz;Surv Ophthalmol,1980
2. Common causes of blindness and visual handicap in the west of Scotland;Ghafour;Br J Ophthalmol,1983
3. Blindness and partial sight in an elderly population;Gibson;Br J Ophthalmol,1986
4. Prevalence of ocular disease and blindness in a rural area in the eastern region of Iceland during 1980 through 1984;Jonasson;Acta Ophthalmologica,1987
5. Racial differences in the cause-specific prevalence of blindness in East Baltimore;Sommer;N Engl J Med,1991