角膜地形图在儿童散光检影验光中的应用

通过比较儿童验光中角膜地形图所测得的角膜散光与检影验光测得的散光的相互关系，探讨角膜地形图检查在儿童散瞳检影验光中的应用价值。 方法：采用计算机辅助的角膜地形图和散瞳检影验光两种测量方法,对88例171眼非混合性散光眼进行检查并比较。 结果：两种方法在检查散光度数及散光轴方面差异无统计学意义(t=1.838，P＞0. 05；t=1.009，P＞0.05),实际最好矫正视力与角膜地形图PVA高值及低值比较差别有统计学意义（t=3.566，P＜0.01；t=3.445，P＜0.01)。 结论:角膜地形图检查所得的散光度数及轴向可为散瞳检影验光提供重要的参考依据,角膜地形图检查在提高低龄儿童散瞳检影验光速度和准确度有一定作用。

Application of corneal topography on cycloplegic dioptoscopy in astigmatic children

AIM:To analyze the correlation of astigmatism by corneal topography and cycloplegic retinoscopy in children with non-mixed astigmatism and study the value of corneal topography.METHODS:Both corneal topography and cycloplegic retinoscopy were used in 88 cases(171 eyes) with non-mixed astigmatism and their results were compared.RESULTS:The difference was not significant in examining astigmatism axis and astigmatism degree(t=1.838,P>0.05;t=1.009,P>0.05),but the actual best-corrected visual acuity was significantly different from high prediction visual acuity(PVA) and low PVA(t=3.566,P<0.01;t=3.445,P<0.01).CONCLUSION:The degree and axis of astigmatism by corneal topography can provide important reference for cycloplegic retinoscopy.Corneal topography can play an important role in increasing the speed and accuracy of cycloplegic retinoscopy.