1. Number of people with glaucoma worldwide;Quigley;Br J Ophthalmol,1996
2. Racial differences in the cause-specific prevalence of blindness in east Baltimore;Sommer;N Engl J Med,1991
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4. Prevalence and causes of visual impairment in the Barbados Eye Study;Hyman;Ophthalmology,2001
5. 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;Liebowitz;Surv Ophthalmol,1980