Objective To evaluate static rotation for astigmatism after treatnent with laser in situ keratomileusis (LASIK).Methods It was a retrospective case series study.A total of 118 patients (184 eyes) with preoperative astigmatism ≥0.75 D from May 2010 to November 2010 were enrolled and proceeded clinic research.According to the patients' choice of the operation,the patients were divided into two groups:65 patients (97 eyes) in the experimental group were performed the wavefront-guided LASIK with iris recognition and 53 patients (87 eyes) in control group were performed conventional LASIK.Static rotation was assessed in the experimental group groups.The main parameters were uncorrected visual acuity and the amount of residual sphere and cylinder 1 day and 1 and 3 months postoperatively.Enumeration data were compared with x2 test and measurement data with intergroup t test.Results Mean static rotation was (3.58±2.31)°.maximum was 9.3°.At 3 months postoperatively,uncorrected visual acuity of 92 eyes (95%) in the experimental group and 74 eyes (85%) in the control group was better than preoperative best-corrected visual acuity,there was a statistical difference (x2=5.56,P<0.05).The mean sphere was (+0.03±0.57)D in the experimental group and (+0.27±0.69)D in the control group,and mean cylinder was (-0.42±0.28)D and (-0.63±0.37)D,respectively,thcre were statistical differences (t=-2.65,4.43,all P<0.01).At 3 months postoperatively,M,Jo,J45 in the experimental group were significantly lower than that in the control group (t=4.43,-2.49,2.01; all P<0.05).Predictability was 67% and 52% within ±0.50 D for sphere and 69% and 48% for cylinder in the experimental and control groups,respectively,there were statistical differences (x2=4.67,P<0.05; x2=9.08,P<0.01).Conclusion Significant cyclotorsion occurs after LASIK treatment.By correcting the cylinder axis,the efficacy of cylinder correction can be improved.
赵秀秀,赵少贞. 眼球静态旋转对LASIK矫治散光的影响[J]. 中华眼视光学与视觉科学杂志, 2012, 14(5): 286-289.
ZHAO Xiu-xiu,ZHAO Shao-zhen. Study static rotation after the LASIK treatment for myopic astigmatism. Chinese Journal of Optometry Ophthalmology and Visual Science, 2012, 14(5): 286-289. DOI: 10.3760/cma.j.issn.1674-845X.2012.05.008