摘要
目的比较角膜地形图引导下不同部位透明角膜切口白内障超声乳化术后散光情况。方法选择行透明角膜切口超声乳化白内障吸除联合人工晶状体植入术的年龄相关性白内障患者198例(231例)为研究对象,分成A、B、C 3组,A组选择在上方11点位透明角膜切口,B组选择在颞侧透明角膜切口,C组选择在角膜最大曲率子午线上透明角膜切口,分别于术前,术后1周、1个月及3个月随访,行视力及角膜地形图检查,记录并比较3组术后视力及角膜散光的变化情况。结果术后3个月时C组裸眼视力≥1.0者多于A组和B组(P<0.05);C组患者术后3个月与术前相比,散光度明显减小(P<0.05);C组分别与A组、B组相比,术后1周、1个月及3个月时的散光度均明显减小(P<0.05);术后3个月平均手术源性角膜散光度(SIA),C组最小。结论角膜地形图引导下位于角膜最大曲率子午线上透明角膜切口有助于减小术前及术后散光,术后获得较好的裸眼视力。
Objective To compare the effects of different corneal topography guided incisions on corneal refraction after phacoemulsification. Methods Totally 198 cataract patients（231 eyes） enrolled in the study. Patients were randomly assigned into 3 groups and clear corneal incisions were made at either superior,or temporal,or along the steepest meridian. Routine ophthalmic examinations and corneal topography were performed for each patient before surgery and at 1 week,1 month,and 3 months after the surgery. Results At 3 months after the surgery,uncorrected visual acuity（ ≥1. 0） wassignificantly better in patients whose corneal incisions were made at the deepest meridian than in patients whose corneal incisions were made elsewhere（ P 〈0. 05）. Astigmatism was also significantly reduced in this group of patients（ P 〈0. 05） starting from 1 week after the surgery and throughout the 3-month follow-up period. Conclusion Corneal incision along the steepest meridian in phacoemulsificationwill reduce the postoperative astigmatism and provide better uncorrected visual acuity to cataract patients.
出处
《临床眼科杂志》
2014年第5期390-392,共3页
Journal of Clinical Ophthalmology
关键词
超声乳化白内障吸除术
角膜
散光
Cataract
Corneal incision
Astigmatism
Corneal topography
