方法：晶状体半脱位患者21例23眼，行晶状体囊内摘除前部玻璃体切割联合IOL悬吊术，依植入IOL类别分为四个闭合襻IOL组和两个C襻IOL组，术后观察视力、眼压、综合验光、眼底，6mo时裂隙灯眼前节摄像系统拍照确定IOL偏心值，超声生物显微镜(ultrasound biomicroscopy，UBM)检查确定IOL的倾斜度检查。

结果：所有患眼术后视力均有不同程度的提高。四襻组IOL平均偏心为0.57mm，两襻组平均偏心0.79mm； 四襻组IOL平均倾斜度为6°，两襻组平均倾斜度11°，两组间差异均有统计学意义(P<0.05)。

结论：晶状体半脱位术中四个闭合襻IOL做悬吊术后居中性更好，IOL倾斜度更小。

METHODS: After intra-capsule lens extraction of dislocated cataract, two types of IOL were used as scleral-fixated posterior chamber IOL. First group was with four seal loops, the second group was with two open loops. All 21 patients(23 eyes)took the examination of the best corrected visual acuity, intraocular pressure, fundus, and IOL decentration using camera system attached to slit-lamp ophthalmoscope and IOL tilted using ultrasound biomicroscopy(UBM)at 6mo after surgery.

RESULTS: After 6mo, all patients had improved eye sight. There was significant difference in the mean IOL decentration between the two groups(0.57mm vs 0.79mm, P<0.05). There was significant difference in the mean IOL tilted degree between the two groups(6° vs 11°, P<0.05).

CONCLUSION: IOL with four loops are more appropriate as scleral-fixated posterior chamber IOL with less tiltness and dicentration.