92只眼非球面人工晶状体囊袋内植入后偏心与倾斜临床分析

目的]比较2种非球面人工晶状体（IOL）在囊袋内植入后偏心与倾斜的差异，探讨IOL的攀设计与特性对在囊袋内稳定性的影响．方法]选择行超声乳化白内障摘除联合人工晶状体植入术的老年性白内障患者61例（92只眼），随机分为2组植入L形Acrysof IQ SN60WFIOL（50眼）和一体四点Akreos Adapt AO IOL（42眼）．术后6个月用眼前节成像系统Pentacam采集各眼的Scheimpflug图像，分析得出IOL的偏心值与倾斜度．结果]AcrysofIQSN60WFIOL和AkreosAdaptAOIOL两组患者IOL的水平偏心值分别为（0．21±0．05）mm，（0．17±0．04）mm，相比较差异有统计学意义（P=0．021）．两组患者IOL的垂直与水平方向倾斜度分别为1．72°±0．76°，1．51°±0．57°，1．64°±0．71°，1.59°±0．41°，差异均无统计学意义（P=0．674，P=0．521）．两组患者的最佳矫正视力和对比敏感度差异亦无统计学意义（P〉0．05）．结论]2种IOL囊袋内植入后在倾斜度方面无明显差异，而在居中性方面，AcrysofIQSN60WFIOL明显优于AkreosAdaptAOIOL，不同非球面IOL的襻设计可影响在囊袋内的稳定性．

Clinical analysis of decentration and tilt of 92 cases of aspheric intraocular lens in phacoemulsification

OBJECTIVE To compare the different of decentration and tilt between two aspheric intraocular lens （IOL） in phacoemulsification. METHODS 92 eyes in 61 patients with cataract surgery were randomized into 2 groups. Acrysof IQ SN60WF （50 eyes） and Akreos Adapt AO （42 eyes） IOL groups, and the Scheimpflug images for each eye at 6 months of postoperation were collected by Pentacam Scheimpflug system, and the measurements of decentration and tilt of IOL were analyzed. RESULTS The measurements of horizontal decentration in IQ and AO IOL groups were （0.21 ± 0.05） mm and （0.17 ± 0.04） mm, respectively, and difference was statistically significant （P = 0.021）. The measurements of vertical and horizontal tilt in the IQ and AO IOL groups were 1.72°± 0.76°, 1.51°± 0.57° and 1.64° ± 0.71° , 1.59° ± 0.41°, respectively, and differences had no statistically significant （P = 0. 674, P = 0. 521）. The mean best corrected visual acuity and contrast sensitivity had no statistical difference in two groups （P〈0.05）. CONCLUSION The tilt has no difference between two IOL in phacoemulsification, and and the Acrysof IQ SN60WF IOLs has a greater tendency toward more decentration than Akreos Adapt AO IOLs, and the different haptic design of IOLs influence the stability in phacoemulsification.