白内障并硅油眼的人工晶状体测量

Measurement of intraocular lens diopter on patients with cataract and silicon oil tamponaded eyes

目的:探讨利用矫正眼球长度来测量计算白内障并硅油眼人工晶状体度数方法的有效性。方法:选取因玻璃体切除术后白内障并硅油眼患者28例28眼,年龄25～72岁。患者均采取坐位方式来测量角膜曲率及眼球长度,测量过程中将玻璃体腔内超声传播速度由1532m/s修改为990m/s,再按SKR-Ⅱ公式来计算人工晶状体度数。患者在同一次手术中行白内障超声乳化摘除、人工晶状体植入及硅油取出。结果:患者28例均顺利植入人工晶状体,取出眼内硅油。术后无严重并发症,患者术后1mo的屈光度在-2.00～2.50DS。结论:利用改良方式来测量白内障并硅油眼的眼轴长度及计算人工晶状体度数是一项可行的临床测量方法。

AIM：To evaluate the feasibility of the measure method of intraocular lens（IOL） diopter in cataract with silicon oil-filled eye by using corrected eye＇s axiel. METHODS： Twenty-eight cases of silicon oil tamponaded eyes with cataract were taken in the study. Their ages were from 25 to 72. They received silicon oil extraction and cataract phacoemulsification and IOL implantation in one operation. Before the operation, they received keratometry measure and eyeball length measure at seated. During the measurement ,the speed of the supersonic wave in vitreous was corrected from 1532m/s to 990m/s. Their IOL power were calculated by SKR-Ⅱformula with corrected eyeball length. RESULTS： All the cases had silicon oil extraction and cataract phacoemulsification and IOL implantation in one operation. There were no complications. Their diopter were from -2.0D to 2.5D one month after the operation. CONCLUSION： Measurement of IOL diopter by axial length on patients with cataract and silicon oil tamponaded eyes is a feasible clinical method.