Rapid assessment of avoidable blindness and needs assessment of cataract surgical services in Satkhira District, Bangladesh
Rapid assessment of avoidable blindness and needs assessment of cataract surgical services in Satkhira District, Bangladesh
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DOI：
10.1136/bjo.2006.101287
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发表时间：
2006-10-01
影响因子：
4.1
通讯作者：
Foster, A.
中科院分区：
文献类型：
--
作者：
Wadud, Z.;Kuper, H.;Foster, A.
目的：估计孟加拉国satkira地区50岁人群失明的程度和原因，并评估白内障手术服务的可获得性。方法：采用概率比例抽样法，选取年龄在bb0 = 50岁的106组50人。住户采用紧凑型分段抽样。合格的参与者测量了他们的视力。视力< 6/18者由眼科医生检查。通过访谈服务提供者对外科服务进行需求评估。结果：共检查4868例，有效率91.9%。双侧失明患病率为2.9%(95%可信区间（CI） 2.4% ~ 3.5%)，重度视力障碍患病率为1.6% (95% CI 1.2% ~ 2.0%)，视力障碍患病率为8.4% （95% CI 7.5% ~ 9.3%）。79%的双侧失明是由于白内障。白内障手术覆盖率中等；61%的双侧白内障（视力< 3/60）患者接受了手术治疗。接受白内障手术的213只眼中，有20%的眼矫正效果较差（视力< 6/60）。Satkhira的白内障手术率（CSR）为每年每百万人547例白内障手术。结论：虽然失明和视力障碍的患病率低于预期，但CSR不足以满足现有需求，手术质量有待提高。
Aims: To estimate the magnitude and causes of blindness in people aged >= 50 years in Satkhira district, Bangladesh, and to assess the availability of cataract surgical services.Methods: 106 clusters of 50 people aged >= 50 years were selected by probability-proportionate to size sampling. Households were selected by compact segment sampling. Eligible participants had their visual acuity measured. Those with visual acuity < 6/18 were examined by an ophthalmologist. A needs assessment of surgical services was conducted by interviewing service providers.Results: 4868 people were examined (response rate 91.9%). The prevalence of bilateral blindness was 2.9% (95% confidence interval (CI) 2.4% to 3.5%), that of severe visual impairment was 1.6% (95% CI 1.2% to 2.0%) and that of visual impairment was 8.4% (95% CI 7.5% to 9.3%). 79% of bilateral blindness was due to cataract. The cataract surgical coverage was moderate; 61% of people with bilateral cataract blindness (visual acuity < 3/60) had undergone surgery. 20% of the 213 eyes that had undergone cataract surgery had a best-corrected poor outcome (visual acuity < 6/60). The cataract surgical rate (CSR) in Satkhira was 547 cataract surgeries per million people per year.Conclusions: Although the prevalence of blindness and visual impairment was lower than expected, the CSR is inadequate to meet the existing need, and the quality of surgery needs to be improved.