本文从循证医学角度研究了老年人群白内障术后低视力因素的现状。多数研究认为白内障并发眼底病变、术后并发症、手术方式选择、年龄是引起术后低视力的重要原因,但可能有部分研究存在设计方面的不足;手术最佳时机的选择尚无定论,术后低视力的防治循证研究较少。国内对低视力因素的大样本随机对照实验研究基本空白。 This article from the perspective of evidence-based medicine to study the elderly population cataract surgery after low vision factors. Most studies suggest that cataract complicated with ocular fundus lesions, postoperative complications, surgical options, and age are the major causes of postoperative low vision, but there may be some design deficiencies in the study; the optimal timing of surgery is inconclusive After low-vision prevention and control of evidence-based research. Domestic low-vision factors large sample randomized controlled experimental study of the basic blank.