角膜地形图引导个体化切削治疗远视的临床研究

THE CLINICAL STUDY ON THE TREATMENT OF HYPEROPIA WITH TOPOGRAPHY - GUIDED CUSTOMIZED ABLATION

目的比较角膜地形图引导的准分子激光角膜磨镶术(laser in situ keratomileusis,LASIK)与传统的LASIK在矫正远视及远视散光中的临床疗效。方法采用随机数字表法将55例患者110眼分为2组,分别行角膜地形图引导的个体化切削治疗(topography-guided customized ablation treatment,T-CAT)引导的LASIK(25例50眼)和传统LASIK(30例60眼)。比较2组术后视力变化、屈光度变化、偏中心切削并发症。结果 2组患者术后视力均明显提高,屈光度均有不同程度回退,T-CAT引导的LASIK组与传统LASIK组比较,术后裸眼视力更好,6个月时屈光度更稳定,差异有统计学意义(P<0.05);T-CAT引导的LASIK组术后偏中心切削发生率明显少于传统LASIK组,差异有统计学意义(P<0.01)。结论 T-CAT引导的LASIK手术治疗远视预测性和术后视力更好,术后并发症更少。

Objective To evaluate the clinical effect of topography - guided laser in situ keratomileusis（LASIK） and conventional LASIK on the correction of hyperopia and hypermetropie astigmatism. Methods Fifty - five patients （ 110 eyes） were randomly divided into two groups. One group of 25 patients （50 eyes）were performed with topography -guided customized ablation treatment （T - CAT） LASIK,the other group of 30 patients（60 eyes）with conventional LASIK. Postoperative uncorrected visual acuity （UCVA）, refraction and deeentered ablation complieation were observed. Results The postoperative visual acuity of the two groups both improved signifieantly and the postoperative refraction regressed in varying degrees. In T - CAT LASIK group, the postoperative UCVA was better and the refraction at 6 months after operation was more reliable. There was statistical difference between the two groups（P 〈0.05）. The ineidence rate of postoperative deeentered ablation in T- CAT LASIK group was obviously less than that in conventional LASIK group and presented signifieantly statistical difference （P 〈 0.01 ）. Conclusion T - CAT LASIK for hyperopia showed better visual acuity, less postoperative complication and was predictable.