4Foster PJ,Oen FT,Machin D,et al.The prevalence of glaucoma in Chinese residents of singapore:a cross2sectional population survey of the Tanjong Pagar district.Arch Ophthalmol.2000,118:1105-1011.
5Dandona L,Dandona R,Mandal P,et al.Angle closure glaucoma in an urban population in southern India:the Andhra Pradesh eye disease study.Ophthalmology,2000,107:1710-1716.
4World Health Organization. Internation statistical classification of diseases and related health problem. Tenth revision.Vol 1. Geneva:World Health Organization,1992.
5Liu JH,Cheng CY,Chen SJ,et al.Visual impairment in a Taiwan Residents population: prevalence, causes, and socioeconomic factors. Ophthalmic Epidemiol, 2001,8:339-350.
6Taylor HR, Livingston FPM, Stanislavsky BYL, et al. Visual impairment in Australia:distance visual acuity, near vision, and visual field findings of the Melbourne Visual Impairment Project. Am J Ophthalmol, 1997, 123: 328-337.
7Hyman L, Wu SY, Connell AMS, et al. Prevalence and causes of visual impairment in the Barbados Eye Study. Ophthalmology, 2001, 108: 1751- 1756.
8Buch H, Vinding T, Nielsen NV. Prevalence and causes of visual impairment according to World Health Organization and United States criteria in an aged, urban Scandinavian population. Ophthalmol, 2001, 108: 2347-2357.
9Buch H, Morten V, Cour ML, et al. The prevalence and causes of bilateral and unilateral blindness in an elderly urban Danish population.The Copenhagen City Eye Study. Acta Ophthalmol Scand, 2001,79:441-449.
10Munoz B, West SK, Rubin GS, et al. Causes of blindness and visual impairment in a population of older Americans. Arch Ophthalmol, 2000,118:819-825.
