2．2mm与1．8mm透明角膜切口白内障超声乳化术后角膜散光的对比研究  

Comparison of phacoemulsification with 2.2mm and 1.8mm transparent corneal incisions on corneal astigmatism

作　　者：杨军[1] 张红[1] 田芳[1] 

机构地区：[1]天津医科大学眼科中心,天津300384

出　　处：《中国实用眼科杂志》2012年第3期273-276,共4页Chinese Journal of Practical Ophthalmology

摘　　要：目的评价2．2mm与1．8mm透明角膜微切口对白内障超声乳化术后角膜散光及其对视功能的影响。方法将60例（60只眼）白内障患者随机分为A、B两组。两组均于11：00分别行2．2mm、1．8mm透明角膜隧道切口白内障超声乳化吸除联合折叠人工晶状体植入术（A组使用IntrepidInfiniti系统，植入SN60WF人工晶状体；B组使用Stellaris系统，植入M160人工晶状体）。术后第一天、第一周、第四周、第六周回访患者，测量患者视力，Pentacam测量角膜曲率，角膜厚度（Come—althickness，CT）。用矢量分析法计算两组的术源性散光（Surgeryinducedastigmatism，SIA），比较两组视力、SIA及CT的差异。结果A、B两组均于术后第一天散光最大，以后逐渐减小，至术后四周趋于稳定，两组间角膜散光比较差异无统计学意义（均P值〉0．05）。对两组术前及术后四周、六周角膜散光行矢量分析，A、B组SIA分别为（0．28±0．09）D、（0．27±0．09）D；（0．27±0．10）D、（0．25±0．10）D，两组间SIA比较差异均无统计学意义（均P值〉0．05）。A、B两组术前、术后第一天、一周、四周、六周视力、CT比较差异均无统计学意义（均P值〉0．05）。结论2．2mm与1．8mm微切口白内障术后的术源性散光均较小，屈光状态稳定快，两种手术系统使用微切口治疗白内障均是安全有效的，均于术后早期即可获得满意的裸眼视力。Objective To investigate the effect of phacoemulsification with 2.2mm and 1.8mm transparent corneal incisions and foldable posterior chamber intraocular lens implantation on corneal astigmatism and visual function. Methods In a prospective study, all 60 eyes of 60 patients with cataract were divided into two groups randomly. Group A and B received superior clear corneal incisions at 11 o＇ clock and had phacoemulsification （Group A with Intrepid Infiniti System, implanted SN60WF IOLs; Group B with Stellaris System, implanted MI60 IOLs）. The changes of visual acuity, corneal astigmatism and corneal thickness were determined pre-operation and 1 day, 1 week, 4 weeks, and 6 weeks post-operation with Standard logarithmic visual acuity charts and Pentacam distinguishly. Using Vector Analysis to calculate Surgery induced astigmatism at 4 weeks and 6 weeks post-operation. Results The corneal astigmatism on the frst day after operation was significant in both groups, later decreased gradually and stabilized at 4 weeks post-operation, there was no signifi- cant difference, statistically （All P 〉0.05）. The surgery induced astigmatism of Group A and B at 4 weeks and 6 weeks post-operation was （0.28±0.09）D, （0.27±0.09）D; （0.27±0.10）D, （0.25±0.10）D sepa-rately, there was no statistically significant （All P 〉0.05）. In visual acuity, corneal thickness in two groups pre-operation and I day, 1 week, 4 weeks, 6 weeks post-operation there was no statistically significant （All P 〉0.05）. Conclusions The surgery induced astigmatism after phaeoemulsification with 2.2mm and 1.8mm transparent corneal incisions is very small. Both groups refractive status become stable quickly, both surgical systems are safe and effective in microcoaxial phacoemulsification. In all the early postoperative can obtain satisfactory uncorrected visual acuity.

关 键 词：术源性散光 角膜散光 超声乳化白内障吸除术 

分 类 号：R779.66[医药卫生—眼科]