摘要
【目的】探讨子午线轴位切口对超声乳化术术后角膜散光度的影响.【方法】选取2014年7月至2015年11月在本院诊治的60例(62只眼)白内障患者为研究对象,采用随机数表法分为A和B两组,每组30例,均采用透明角膜切口.A组切口位于最大角膜屈光力子午线轴位,B组切口位于颞上侧(右眼)或鼻上侧(左眼).两组同时行白内障超声乳化吸除术和可折叠式人工晶体植入术.两组患者术前、术后1d、1周、1个月采用C T 200角膜地形图仪测量散光度及轴向,根据角膜散光度和轴向计算手术源性散光度,并比较两组的角膜散光度、手术源性散光度和裸眼视力.【结果】两组患者术后视力均较术前显著改善(P<0.05),但术后1d、1周及1个月两组患者视力比较差异均无统计学意义(P>0.05).术后1d,两组角膜散光度比较无统计学意义(P>0.05);术后1周及1个月时A组角膜散光度均显著小于B组,其差异具有统计学意义(P<0.05);术后1周、1个月,A组手术源性散光度均显著小于B组,差异具有统计学意义(P<0.05).【结论】选择角膜屈光力子午线轴位作为白内障手术中的透明角膜切口,能显著降低白内障患者术后的角膜散光度和手术源性散光度,具有较好的临床应用价值.
【Objective】To explore the effect of radial axial incision on corneal astigmatism after ultrasonic phacoemulsification.【Methods】A total of 60 cases(with 62 eyes)of cataract patients were selected from July 2017 to November 2015 in our hospital for the study.Patients were divided into the group A and group B randomly,with 30 cases in each group.Both groups received a corneal incision in the certain part of cornea.The incision of the group A was at the maximum corneal refractive radial axial and the incision of the group B was at the traditional temporal side(right eye)or nasal side(left eye).At the same time,patients in the two groups had ultrasonic phacoemulsification and foldable intraocular lens implantation.The astigmatism and axial direction of patients were measured by CT200 corneal topography before the surgery and after the surgery(at 1 day,1 week and 1 month).The surgically derived astigmatism was calculated according to the corneal astigmatism and axial direction.Then,the data of corneal astigmatism,surgically induced astigmatism and visual acuity were compared between the two groups.【Results】Postoperative visual acuity was significantly improved in the two groups(P<0.05),while there was no statistically significant difference in visual acuity between the two groups at 1 day,1 week and 1 month after the operation(P>0.05).The corneal astigmatism of the two groups was not statistically significant at 1 day after surgery(P>0.05),while the corneal astigmatism in group A at 1 week and 1 month after surgery was significantly less than that in group B・and the difference was statistically significant(P<0.05).At 1 week and 1 month after surgery,the surgically derived astigmatism in group A was significantly lower than in group B(P<0.05).【Conclusion】The incision at the maximum curvature of the cornea i.e.radial axial incision in cataract surgery can significantly reduce the corneal astigmatism and surgically derived astigmatism,which has good clinical application value.
作者
张虹
陈颖平
陈圣文
ZHANG Hong;CHEN Ying-ping;CHEN Sheng-wen(Department of Ophthalmology,the 2nd Affiliated Hospital of Hainan Medical University,Hankou,570311,China)
出处
《医学临床研究》
CAS
2020年第6期870-872,共3页
Journal of Clinical Research
