Vector analysis of small incision lenticule extraction and toric implantable collamer lens implantation for astigmatism correction
Vector analysis of small incision lenticule extraction and toric implantable collamer lens implantation for astigmatism correction
复制标题
小切口微透镜取出和复曲面植入式领环镜片植入矫正散光的矢量分析
DOI：
10.1177/1120672120930607
复制
发表时间：
2020-05-29
影响因子：
1.7
通讯作者：
Yang, Yabo
中科院分区：
文献类型：
--
作者：
Wan, Ting;Yin, Houfa;Yang, Yabo
目的：通过向量分析比较小切口晶状体摘除(SMILE)和环形植入性胶原性人工晶状体(TICL)植入术矫正近视散光的疗效。方法：对171例(171眼)准分子激光屈光度为1.0度的准分子激光原位角膜磨镶术患者，其中97眼植入SMILE，74眼植入TICL。检查术前和术后3个月的视力和屈光状态。结果：术后3个月，SILE组和TCL组的残余柱体分别为-0.10+/-0.21D和-0.30+/-0.32D(p<；0.05)。此外，SMILE组和TICL组分别有98%和85%的眼的柱状突度在+/-0.5D以内。向量分析显示，两组的靶点散光向量相似。然而，TICL组的差值向量、误差幅度、误差角和成功指数(分别为0.30+/-0.32D、-0.19+/-0.25、-2度+/-4.35度和0.16+/-0.17D)显著高于微笑组(0.10+/-0.21D、-0.05+/-0.20、-0.03度+/-2.13度和0.05+/-0.12度)，分别)，而不考虑术前气缸的程度(所有p<；0.05)。对于术前屈光度为2.0D的柱面，SMILE组的手术散光向量和矫正指数均高于TICL组(P<；0.05)。结论：SMILE和TICL植入术均是矫正近视散光的有效方法。然而，SILE矫正散光的大小和轴向的准确率要好于TICL植入。
Objectives:To compare the efficacy of small incision lenticule extraction (SMILE) and toric implantable collamer lens (TICL) implantation for myopic astigmatism correction using vector analysis.Methods:In this retrospective study, 171 eyes of 171 patients with cylinder > 1.0 diopters (D) were recruited, with 97 eyes underwent SMILE and 74 eyes underwent TICL implantation. Preoperative and 3-months postoperative visual and refractive results were examined. The astigmatism correction, graded by the degree of preoperative cylinder was compared between two groups using vector analysis.Results:At 3-months postoperatively, the residual cylinder was -0.10 +/- 0.21 D in the SMILE group and -0.30 +/- 0.32 D in the TCL group (p < 0.05). Furthermore, 98% and 85% of eyes had the cylinder within +/- 0.5 D in the SMILE and TICL group, respectively. The vector analysis revealed similar target induced astigmatism vector in two groups. However, the difference vector, magnitude of error, angle of error, and index of success were significantly higher (0.30 +/- 0.32 D, -0.19 +/- 0.25, -2 degrees +/- 4.35 degrees, and 0.16 +/- 0.17 D, respectively) in the TICL group than the values in the SMILE group (0.10 +/- 0.21 D, -0.05 +/- 0.20, -0.03 degrees +/- 2.13 degrees, and 0.05 +/- 0.12, respectively), regardless of the degree of preoperative cylinder (all p < 0.05). For preoperative cylinder < 2.0 D, surgically induced astigmatism vector and correction index in the SMILE group were higher than those in the TICL group (p < 0.05).Conclusion:Both SMILE and TICL implantation are effective techniques for myopic astigmatism correction. However, the accuracy of correction in the magnitude and axis of astigmatism with SMILE was better than that achieved with TICL implantation.