论文部分内容阅读
目的探讨青光眼小梁切除术对角膜屈光力的影响。方法使用角膜地形图仪对青光眼小梁切除手术前后的角膜形态改变进行比较分析。共检查５０例病人５２只眼，其中三角形巩膜瓣组２６只眼，长方形巩膜瓣组２６只眼。结果分别对两组手术前的角膜表面非对称指数（ＳＡＩ），角膜表面规则指数（ＳＲＩ），模拟角膜计读数（ＳｉｍＫ），角膜最小曲率值（ＭｉｎＫ），角膜表面柱镜值（ＣＹＬ）与手术后１周及１个月时的角膜ＳＡＩ、ＳＲＩ、ＳｉｍＫ、ＭｉｎＫ、ＣＹＬ等数值比较，均无显著性差异（Ｐ＞０．０５）。结论无论采用三角形巩膜瓣或长方形巩膜瓣的青光眼小梁切除术对角膜屈光力改变不大，不会造成术后散光。
Objective To investigate the effect of glaucoma trabeculectomy on corneal refractive power. Methods Corneal topography was used to compare the changes of corneal morphology before and after trabeculectomy in glaucoma. A total of 52 eyes of 50 patients were examined, including 26 eyes of triangular scleral flap group and 26 eyes of rectangular scleral flap group. Results The preoperative corneal surface asymmetry index (SAI), corneal surface regular index (SRI), simulated keratometer readings (SimK), minimum corneal curvature (MinK), corneal surface astigmatism (CYL) There were no significant differences in corneal SAI, SRI, SimK, MinK and CYL at 1 week and 1 month after surgery (P> 0.05). Conclusion Glaucoma trabeculectomy with triangular scleral flap or rectangular scleral flap has little effect on corneal refractive power and will not cause postoperative astigmatism.