随着微创玻璃体切除术(pars plana vitrectomy，PPV)的广泛开展和手术技术的提高，患者对手术后视觉质量的要求越来越高。白内障是PPV术后最常见并发症，而具有玻璃体切除史的白内障患者屈光变异大，预测难度高。本文综述了生物测量误差、人工晶状体屈光力计算公式选择以及有效晶状体位置预测等影响有玻璃体切除手术史的白内障患者术后屈光误差的主要因素，旨在为降低这一类特殊人群白内障术后屈光误差提供参考。

With the widespread application of minimally invasive vitrectomy and the improvement of surgical techniques, the demands of patients for better postoperative visual quality are increasing. Cataract is the most common complication after vitrectomy, whereas the refractive outcomes of cataract patients with prior vitrectomy are viable and difficult to predict. In this paper, the main factors affecting postoperative refractive error of cataract patients with a history of vitrectomy, such as biometric error, selection of intraocular lens calculation formulas and prediction of effective lens position, were reviewed in order to provide reference for reducing postoperative refractive error of this special group of cataract patients.

目的：探讨品管圈在提高玻璃体切除术后患者俯卧位执行率中的应用效果。方法：成立品管圈活动小组，选定提高玻璃体切除术后患者俯卧位执行率作为活动主题，运用品管圈工具和方法，对现状进行分析，找出影响因素，制定相应的措施并组织实施，比较品管圈活动前后玻璃体切除术后患者俯卧位执行率情况。结果：玻璃体切除术后患者俯卧位执行率由活动前的64.70%提高到95.83%。结论：运用品管圈能显著提高玻璃体切除术后患者俯卧位执行率，值得临床推广。

Objective: To explore the effect of quality control circle on improving the prone position execution rate of patients after vitrectomy. Methods: Establish quality control circle activity group, select improving the prone position execution rate of patients after vitrectomy as the activity theme, use quality control circle tools and methods to analyze the status quo, find out the influencing factors, formulate corresponding measures and implement them, and compare the prone position execution rate of patients before and after quality control circle activity. Results: The prone position execution rate of patients after vitrectomy increased from 64.70% to 95.83%.Conclusion: The application of quality control circle can significantly improve the prone position implementation rate of patients after vitrectomy, which is worthy of clinical promotion.