北京市顺义县50岁及以上人群中盲患病率调查

目的 调查北京市顺义县５０岁及以上人群盲患病率,并与１９８５年调查结果相比较,以此评价近１０余年该县实施防盲治项目的效果。方法 １９９６年９～１１月采用整群随机抽样方法在顺义县抽取２８个调查点,对５０岁及以上人群进行视力和眼部检查。正式现场调查之前先进行预试验,并进行保证调查质量的重复性检验。结果 检录５５５５例中,受检人数为５０８４例,受检率为９１．５％。以世界卫生组织视力损伤为标准,盲患病率为

Prevalence of blindness among adults aged 50 years or above in Shunyi county of Beijing

OBJECTIVE: To estimate the prevalence of blindness among older adults aged >or= 50 years in Shunyi county of Beijing, China. METHODS: Cluster sampling was used in randomly selecting individuals aged >or= 50 years in 28 villages in Shunyi county in fall, 1996. The survey was preceded by a pilot study where operational methods were refined and quality assurance evaluation was carried out. RESULTS: 5,555 individuals were enumerated. The response rate was 91.5%. In this population, the prevalence of blindness was 1.7% defined as pinhole visual acuity < 0.05 in both eyes; or 2.8% were blind, defined as presenting visual acuity < 6/60 in both eyes. Blindness was associated with older age and female gender. The principal cause of blindness in eyes was cataract. CONCLUSIONS: The prevalence of blindness was decreased 35.8% after ten year active eye-care program in the survey area. However, cataract blindness continues as a significant problem among elderly, especially females, in this population sample of rural area.