Prevalence and causes of visual impairment according to World Health Organization and United States criteria in an aged, urban Scandinavian population - The Copenhagen City Eye Study
Prevalence and causes of visual impairment according to World Health Organization and United States criteria in an aged, urban Scandinavian population - The Copenhagen City Eye Study
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DOI：
10.1016/s0161-6420(01)00823-5
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发表时间：
2001-12-01
期刊：
影响因子：
13.7
通讯作者：
Nielsen, NV
中科院分区：
文献类型：
--
作者：
Buch, H;Vinding, T;Nielsen, NV
目的：为了评估老年人，城市个人在丹麦的流行病学研究中视力损害的患病率和原因。设计：横断面研究。参与者：研究人群包括1000名随机选择的居民，年龄在60至80岁，在哥本哈根，丹麦。在976名符合条件的人中，946人（96.9%）可以接受检查。最佳矫正视力（VA）的信息，从944合作的人获得方法：来自哥本哈根城市眼科研究的数据被用来评估世界卫生组织（WHO）定义的视力障碍的病因特异性患病率（较好眼的VA差于20/60-20/400）和美国最常用的标准（较好眼的VA差于20/40但好于20/200）。符合条件的受试者在丹麦国立大学医院接受了广泛的眼科检查。主要结果测量：最佳矫正视力和视力损害的主要原因。结果：根据WHO定义，低视力的患病率范围为70 - 74岁受试者的2.6%至75 - 80岁受试者的4.8%，年龄调整后的相对患病率为1.58%。使用美国的定义，经年龄调整的视力障碍的总体患病率为2.9%。根据WHO标准，视力损害的原因是年龄相关性黄斑变性（AMD）（44.4%）、白内障（33.3%）、青光眼合并白内障（11.1%）、近视性黄斑变性（5.6%）和糖尿病视网膜病变（5.6%）。然而，根据美国标准，白内障是最常见的主要原因（50.0%），AMD是第二常见的主要原因（34.4%）。此外，使用美国的标准糖尿病视网膜病变被发现同样重要的AMD和白内障作为一个原因，视力损害的人年龄在65至69岁（33.3%）。结论：增加年龄是一个独立的预测视力损害。白内障和AMD是主要病因。根据世界卫生组织的标准，充分实施手术治疗白内障可使视力损害减少33.3%，根据美国的标准可减少50%。(C)2001年由美国眼科学会。
Purpose: To evaluate the prevalence and causes of visual impairment in an epidemiologic study of aged, urban individuals in Denmark.Design: Cross-sectional study.Participants: The study population consisted of 1000 randomly selected residents aged 60 to 80 years in Copenhagen, Denmark. Of 976 eligible persons, 946 (96.9%) could be examined. Information about best-corrected visual acuity (VA) was obtained from 944 cooperative persons (96.7%).Methods: Data from the Copenhagen City Eye Study were used to assess the cause-specific prevalence of visual impairment as defined by the World Health Organization (WHO) (VA worse than 20/60-20/400 in the better eye) and the criteria used most commonly in the United States (VA worse than 20/40 but better than 20/200 in the better eye). Eligible subjects underwent an extensive ophthalmologic examination at The National University Hospital of Denmark.Main Outcome Measures: Best-corrected VA and primary causes of visual impairment.Results: The prevalence of low vision according to the WHO definition ranged from 2.6% in subjects aged 70 to 74 years to 4.8% in subjects 75 to 80 years of age, with an age-adjusted relative prevalence of 1.58%. Using the U.S. definition, the overall age-adjusted prevalence of visual impairment was 2.9%. The causes of visual impairment according to the WHO criteria were age-related macular degeneration (AMD) (44.4%), cataract (33.3%), glaucoma in combination with cataract (11.1%), myopic macular degeneration (5.6%), and diabetic retinopathy (5.6%). However, according to the U.S. criteria, cataract was the most frequent primary cause (50.0%) and AMD was the second most frequent primary cause (34.4%) of visual impairment. Furthermore, using the U.S. criteria diabetic retinopathy was revealed as equally important as AMD and cataract as a cause of visual impairment among persons aged 65 to 69 years (33.3%).Conclusions: Increasing age was an independent predictor of visual impairment. Cataract and AMD were the leading causes. Adequate implementation of surgery to treat cataract could reduce visual impairment by 33.3% according to the WHO criteria and by 50% according to the U.S. criteria. (C) 2001 by the American Academy of Ophthalmology.