Prevalence of Cataract Surgery and Postoperative Visual Outcome in Greater Beijing.The Beijing Eye Study.

刘斌   徐亮   王亚星   jost jonas

首都医科大学附属北京同仁医院北京市眼科研究所   德国海德堡大学   100730

Purpose:To determine the prevalence of cataract surgery and the postoperative visual outcome in the adult Chinese population living in rural and urban regions of Greater Beijing.

Method:The prevalence of surgical pseudophakia/aphakia was assessed and postoperative visual acuity and reasons for decreased postoperative vision were examined.

Results:Out of the 3215 subjects for whom data on the lens status were available，92 subjects had undergone cataract surgery in one or both eyes(prevalence rate：2.86%).The prevalence of postoperative visual impairment was20.3%as defined by presenting visual acuity of less than 6/18，and it was 10.5%as defined by best corrected visual acuity of less than 6/18.The most common cause of postoperative visual impairment was uncorrected refractive error.

Conclusions:In the adult population of Greater Beijing，about 3%of the population aged 45+years underwent cataract surgery，the prevalence of which was associated with age，angle-closure glaucoma and hemorrhagic retinopathy.Low postoperative visual acuity was associated with rural region，undercorrection of refractive error and hemorrhagic retinopathy.