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近视散光患者行Alpins矢量分析法分析经上皮准分子激光角膜切削术的价值

2020-06-08薛桂华

中外医学研究 2020年11期
关键词:准分子内源性源性

薛桂华

【摘要】 目的:探討近视散光患者行Alpins矢量分析法分析经上皮准分子激光角膜切削术的价值。方法:回顾性分析笔者所在医院收治的实施经上皮准分子激光角膜切削术患者90例(180眼)临床资料,按照全眼散光中角膜散光所占比例划分为三组,每组30例。行Alpins矢量分析法分析三组手术前后散光相关指标。结果:角膜源性散光组术后UCVA、UCVA≥术前BCVA比例高于眼内源性散光组、混合源性散光组,且混合源性散光组高于眼内源性散光组,差异均有统计学意义(P<0.05)。角膜源性散光组术后残留散光度低于眼内源性散光组、混合源性散光组,且混合源性散光组低于眼内源性散光组,差异均有统计学意义(P<0.05)。角膜源性散光组CR、SIRC高于眼内源性散光组、混合源性散光组,且混合源性散光组高于眼内源性散光组,差异均有统计学意义(P<0.05)。角膜源性散光组EA、EM、ER、EV、IRC、ISV、IVA低于眼内源性散光组、混合源性散光组,且混合源性散光组低于眼内源性散光组,差异均有统计学意义(P<0.05)。结论:经上皮准分子激光角膜切削术患者行Alpins矢量分析法分析可知,角膜源性散光的矫正效果最理想。

【关键词】 近视散光 Alpins矢量分析法 上皮准分子激光角膜切削术

[Abstract] Objective: To evaluate the value of Alpins vector analysis in patients with myopic astigmatism for transepithelial excimer laser keratectomy. Method: Retrospective analysis was performed on clinical data of 90 patients (180 eyes) admitted in our hospital who underwent transepithelial excimer laser keratectomy. The patients were divided into three groups according to the proportion of corneal astigmatism in total eye astigmatism, with 30 cases in each group. Alpins vector analysis was performed to analyze the related indexes of astigmatism before and after operation in the three groups. Result: The postoperative UCVA and proportion of UCVA≥ preoperative BCVA of the corneal astigmatism group were higher than those of the endogenous astigmatism group and the mixed astigmatism group, and the mixed astigmatism group were higher than those in the endogenous astigmatism group, the differences were statistically significant (P<0.05). The postoperative residual astigmatism in the corneal astigmatism group was lower than that in the endogenous astigmatism group and the mixed astigmatism group, and the mixed astigmatism group was lower than that in the endogenous astigmatism group, the differences were statistically significant (P<0.05). The CR, SIRC of the corneal astigmatism group were higher than those of the endogenous astigmatism group and the mixed astigmatism group, and the mixed astigmatism group were higher than those of the endogenous astigmatism group, the differences were statistically significant (P<0.05). The EA, EM, ER, EV, IRC, ISV, IVA in the corneal astigmatism group were lower than those in the endogenous astigmatism group and the mixed astigmatism group, and the mixed astigmatism group were lower than those in the endogenous astigmatism group, the differences were statistically significant (P<0.05). Conclusion: Alpins vector analysis of patients undergoing transepithelial excimer laser keratectomy shows that the correction effect of corneal astigmatism is the best.

本次研究工作中,按照全眼散光中角膜散光所占比例将90例(180眼)实施经上皮准分子激光角膜切削术患者进行分组,划分为角膜源性散光组、眼内源性散光组、混合源性散光组,每组30例(60眼),并均实施一般检查方法、Pentacam检测方法、手术、术后随访、角膜散光测量及标准矢量分析方法。同时,本次研究工作中观察范围指标包括Pentacam所测得角膜前表面ISV指标、IVA指标,从而寻找其与散光来源之间关系。从本次研究结果数据可知,角膜源性散光组术后UCVA、UCVA≥术前BCVA比例、CR、SIRC均高于眼内源性散光组、混合源性散光组(P<0.05),且混合源性散光组高于眼内源性散光组(P<0.05)。角膜源性散光组术后残留散光度、EA、EM、ER、EV、IRC、ISV、IVA均低于眼内源性散光组、混合源性散光组(P<0.05),且混合源性散光组低于眼内源性散光组(P<0.05)。研究结果提示,运用Alpins矢量分析法分析显示,经上皮准分子激光角膜切削术更适合运用于角膜前表面散光矫正;而且,角膜源性散光矫正准确性最高,而眼内源性散光矫正准确性则最差。同时,眼内散光主要是晶状体,而随着年龄增加,晶状体形态、晶状体密度均不断变化,致使眼内散光大小、轴向均随之逐渐变化[9-10]。因此,如果眼内散光为主者,年龄合适,则更适宜选择眼内屈光手术矫正[11]。

综上所述,临床结合经上皮准分子激光角膜切削术的近视散光患者的疾病特点,运用Alpins矢量分析法分析可知,该治疗方法的角膜源性散光矫正效果最理想,而眼内源性散光矫正效果则最差,有重要临床应用价值。

参考文献

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(收稿日期:2019-12-24) (本文编辑:桑茹南)

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