Prevalence and causes of blindness and low vision in Timor-Leste
Prevalence and causes of blindness and low vision in Timor-Leste
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DOI：
10.1136/bjo.2006.106559
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发表时间：
2007-09-01
影响因子：
4.1
通讯作者：
Brian, Garry
中科院分区：
文献类型：
--
作者：
Ramke, Jacqueline;Palagyi, Anna;Brian, Garry
目的评估在东帝汶年龄大于或等于40岁的人群中失明和低视力的患病率和原因。方法采用基于人群的横断面调查，采用多阶段整群随机抽样，确定50组30人。对于每只视力低于6/18的眼睛，确定视力丧失的原因。结果经点算的1470人中，有1414人（96.2%）接受了检查。年龄、性别和户籍调整后的功能性失明患病率（较好眼视力低于6/60）为7.4% (95% CI 6.1至8.8)，3/60的失明患病率为4.1% （95% CI 3.1至5.1）。调整后的低视力患病率（眼显视力较好为6/60或更好，但差于6/18）为17.7% （95% CI 15.7至19.7）。性别不是失明或视力低下的危险因素，但年龄增长、文盲、自给农业、失业和农村户籍是两者的危险因素。白内障是最常见的致盲原因（72.9%），也是低视力的重要原因（17.8%）。未矫正的屈光不正导致81.3%的低视力。结论使高质量的白内障和屈光不正服务可获得、可负担和可及的策略，特别是在农村地区，对视力损害的影响最大。
AimTo estimate the prevalence and causes of blindness and low vision in people aged ⩾40 years in Timor-Leste.MethodA population-based cross-sectional survey using multistage cluster random sampling to identify 50 clusters of 30 people. A cause of vision loss was determined for each eye presenting with visual acuity worse than 6/18.ResultsOf 1470 people enumerated, 1414 (96.2%) were examined. The age, gender and domicile-adjusted prevalence of functional blindness (presenting vision worse than 6/60 in the better eye) was 7.4% (95% CI 6.1 to 8.8), and for blindness at 3/60 was 4.1% (95% CI 3.1 to 5.1). The adjusted prevalence for low vision (better eye presenting vision of 6/60 or better, but worse than 6/18) was 17.7% (95% CI 15.7 to 19.7). Gender was not a risk factor for blindness or low vision, but increasing age, illiteracy, subsistence farming, unemployment and rural domicile were risk factors for both. Cataract was the commonest cause of blindness (72.9%) and an important cause of low vision (17.8%). Uncorrected refractive error caused 81.3% of low vision.ConclusionStrategies that make good-quality cataract and refractive error services available, affordable and accessible, especially in rural areas, will have the greatest impact on vision impairment.