四川省安岳县可避免盲白内障的快速评估调查分析

Rapid assessment of avoidable blindness cataract in country Anyue in Sichuan Province

目的利用可避免盲的快速调查方法调查安岳县i〉50岁人群的白内障及术后效果等，并对该调查方法进行评价。方法以50人为1组，共76组I〉50岁人群作为调查对象，用“E”字表检查视力后视力检查眼部情况，判断影响视力的主要原因。结果完成调查对象3288人（应答率为86．5％），男1271人（38．7％），女2017人（61．3％），发现白内障832例（25．3％），白内障盲175例（5．3％），其中50、60、70、80及以上年龄段人群的白内障患病率分别为9．2％、25．2％、47．6％、70．1％，109只眼接受过白内障手术，其中植入人工晶体88眼（80．7％），手术后视力≥0．3有59眼（54．1％）。结论白内障是导致安岳县≥50岁人群盲的主要原因，需关注提高白内障的手术效果，可避免盲的快速评估调查方法可以快捷了解白内障盲的发生情况及手术效果等。

Objective To explore the prevalence of cataract and measure the outcomes after cataract surgery in patients aged≥50 years and to evaluate the validity of Rapid Assessment of Avoidable Blindness （RAAB）. Methods A total of 76 clusters of 50 patients aged ≥50 years were selected through probability proportionate to size sampling. The measurements of visual acuity （VA） were made with a tumbling-E chart and the diagnosis of the principal cause of visual impairment by an ophthalmologist. Results A total of 3288 patients were examined with a response rate of 86. 5%. There were 271 males （38. 7% ） and 2017 females （61.3%）. Among 832 cataract patients, 175 （5.3%） had blindness due to cataract. The prevalence of cataract was 9. 2% , 25.2% , 47.6% , 70. 1% in 50, 60, 70, 80 years old respectively. And 109 eyes underwent cataract surgery. Among 88 pseudophakic eyes （ 80. 7% ） , 59 eyes achieved excellent outcomes （ VA ≥ 0. 3 ） after surgery （ 54. 1% ）. Conclusion The major cause of blindness in Anyue is due to cataract. Attention needs to be paid to improving outcomes after surgery. RAAB provides information about the magnitude and cause of avoidable blindness so that it may be used for planning and monitoring cataract.