准分子激光非球面切削治疗中高度散光的疗效观察

Observation of aspheric ablation in LASIK treating high astigmatism

目的分析比较准分子激光非球面切削与标准切削治疗中高度散光后的视功能、Q值差异及患者满意度,探讨非球面切削治疗中高度散光的疗效。方法将中高度近视散光(散光≥-2.00DC)37例(74只眼)随机分为两组。Q值调整组20例(40只眼),行非球面切削引导的准分子激光手术;标准组17例(34只眼),行传统LASIK手术。观察并分析术后10d,1、3、6个月的视力、屈光度、Q值的变化及患者满意度。结果术后各期裸眼视力,残余屈光度两组之间比较无统计学差异(P>0.05)。两组之间术后Q值变化有统计学意义(P<0.01),Q值调整组术后Q值增加较标准组小。两组术后患者满意度比较有统计学差异(P<0.05),Q值调整组患者满意度较高。结论准分子激光非球面切削与标准切削治疗中高度散光均安全有效,但非球面切削能更好地维持角膜形态,与标准切削比效其术后视觉质量更好,患者满意度更高。

Objective Compared visual function,the change of Q value and patient＇ s satisfaction after aspheric Lasik with those after standard Lasik to correct high astigmatism, this study is to investigate the effect of aspheric ablation to correct high astigmatism. Methods 74 high myopic astigmatism eyes of 37 patients were divided into two groups. 40 eyes of 20 patients in asphefic group were treated with aspherie Lasik. 34 eyes of 17 patients in standard group were treated with standard Lasik. The vision acuity , residual diopter, Q value and patient＇s satisfaction were observed after operation. Results The uneorreet vision acuity in 10 day,1 month, and 3, 6 month in postoperation approached the best correct vision ability in preoperation （ P 〉 0.05 ）. No significant difference was found in residual diopter betweens those two groups （ P 〉 0.05 ）. The Q value of postopertion in aspherie group was significant smaller than that in standard group （ P 〈 0.01 ）. The patient in aspheric group is more satisfied than that in standard group （ P 〈 0.05）. Conclusion Both aspheric Lasik and standard Lasik is secure and effective in treating high astigmatism . But aspherie ablation can improve visual function which make the patient more satisfied , because it maintain the corneal＇ s surface.