施氏圆柱镜检影法的准确性探讨

摘要

目的 探讨施氏圆柱镜检影法检查散光的准确性及其临床应用价值.方法 横断面研究.选择5～38岁的散光患者58例(100眼),先应用施氏检影法检查,得到预测值与实际测量值,对两者的散光度和散光轴向进行比较；再应用自动验光仪进行检查,并与施式检影法的散光度、散光轴向及调节稳定性进行比较.采用配对t检验.结果 预测值和实际测定值的比较:两者差异无统计学意义.施氏检影法与自动验光仪两种方法测量的散光度及散光轴位差异无统计学意义.施氏检影法与自动验光仪检测值的调节稳定性差异有显著性(t=8.943、4.066,P＜0.01).结论 施氏检影法预测散光具有准确性高,操作简单快速的特点,值得临床推广使用.%Objective To discuss the accuracy and clinical value of Shi's retinoscopy.Methods In this cross-sectional study,100 eyes of 58 patients with ametropia ranging in age from 5 to 38 years were involved in this clinical trial.Shi's retinoscopy method was used to obtain the predictive value and practical measured value.The astigmatism power and axis were also compared.The subjects were then checked with an autorefracter.Finally,the differences between astigmatism power,axis,the adjustment stability of Shi's retinoscopy and the measured value obtained from the autorefracter were analyzed using a paired t test.Results Respective predictive values and practical measured values were compared.The differences were not statistically significant.In addition,the comparison of astigmatism power and axis obtained from Shi's retinoscopy and the autorefracter did not show a statistically significant difference.However,a comparison of the adjustment stability of the measured values between Shi's retinoscopy and the autorefracter showed statistically significant differences (t=8.943,4.066,P＜0.01).Conclusion Shi's retinoscopy has the advantages of high accuracy,and quick and simple operation in predicting ametropia.Promotion for wide use in the clinic is merited.