电脑验光在儿童远视性屈光不正中的应用

Application of Computer Optometry in Children with Hypermetropia

目的探讨自动电脑验光仪在远视性屈光儿童中的应用价值。方法 172例远视性屈光(+8.50D 以下)儿童,分两组进行阿托品散瞳后电脑验光和视网膜检影比较及散瞳前后电脑验光对比检查、分析。结果散瞳后电脑验光和视网膜检影球镜值和柱镜值均差异无显著性(t=1.1069和 t=1.811,P>0.05);柱镜轴与柱镜值大小无明显相关。散瞳前后电脑验光的球镜值差异显著性(t=19.864,P<0.05),柱镜值差异无显著性(t=1.942,P>0.05);柱镜轴差异与柱镜值大小成反比。结论儿童验光准确性的基础在于静态屈光,对于+8.50 D 以下的远视眼,电脑验光结合视网膜检影和主观试镜、复验能得到准确的屈光值。

Purpose To evaluate the application of automatic optometry instrument in hypermetropic children. Methods 172 examples of hypermetropic children(less than + 8.50 D)were divided in to two study groups.Comparisons were made between computer optometry and retinoscopy,beth after atropine mydriasis in one group and between computer optometry before and after mydriasis in the other.Results There was no significant difference in computer optometry and retinoscopy after mydriasia in either spherical or cylindrical lens values(t=1.1069 and t=1.811,P>0.05).There was no relationship between cylindrical axes and cylindrical lens value.However,there was significant difference in spherical lens values(t=19.864,P<0.05)obtained before and after mydriasis,but in cylindrical lens values there was no difference(t =1.942,P>0.05)before and after mydriasis.There was an inverse relationship between the difference of cylindrical axes and cylindrical lens value.Conclusion Accurate results of optometry values in children depend on static refraction.In hypermetropic children,less than + 8.50 D,if optometry values are combine with retinoacopy and subjective refraction, repeated examination can yield accurate value of refraction.