白内障手术方式对波前像差的影响

The Effect of Different Surgery on Wavefront Aberrations of Pseudophakic Patients after Cataract Surgery and Intraocular Lens Implantation

目的 探讨白内障超声乳化术和非超乳小切口白内障手术后波前像差的变化规律.方法 选取26例(32眼)年龄相关性白内障患者,随机分为两组:超声乳化术组(A组),非超乳小切口白内障手术组(B组),对照组(C组)为无眼疾的自愿者13例(16眼).分别检测术后波前像差,并进行统计学分析.结果 术后第3天及3个月,A组像差均小于B组,二者均大于对照组,差异有统计学意义(P＜0.05).A组术后第3个月RMSg及RMS4小于术后第3天,差异有统计学意义(P＜0.05);RMS3,RMS5及RMS6差异无统计学意义(P＞0.05).B组术后第3个月RMSg及RMS3～6均小于术后第3天,差异有统计学意义(P＜0.05).结论 白内障术后光学像差较正常眼增加.超声乳化术较非超乳小切口白内障手术对光学像差的影响更小;术后随着时间延长,像差有减小的趋势.

Objective To evaluate the effect of different surgeries on wavefront aberrations of pseudophakic patients after cataract surgery.Methods Age-related cataract under cataract surgery and intraocular lens implantation were divided into 2 groups:phacoemulsification surgery(A group),ECCE surgery with small scleral incision(B group).The Wavefront aberrations of patients at 3 days and 3months postoperatively and those of normaI controls(D group) were measured.Aberrations were compared between the 2 test groups and the control group.Results The differences of the RMS mean values of the overall waefront aberration ang the aberration in high orders bwtween A group and B group at 3d and 3m after surgery were statistically significant(P<0.05).For A group,the differences of the RMS mean values of RMSg and RMS4 between 3d and 3m after surgery were statistically significant(P<0.05);The difference of RMS3,RMS5 and RMS6 were not statistically significant(P>0.05).For B group,the differences of the RMS mean values of RMSg and RMS3～6 between 3d and 3m after surgery were statistically significant(P<0.05).Conclusion Pseudophakic patients have higher optical aberrations after cataract surgery than normal eyes.The effects of different sugeries on optical aberrations were of great significance.Patients after phacoemulsification surgery have lower optical aberrations than ECCE surgery.