综合验光精确老视近附加与经验值的对比研究

Comparation of presbyopic ADD of subjective refraction and the theoretical results

目的:探讨综合验光精确老视近附加(ADD)的重要性。方法:随机抽取老视患者112名,年龄42-79岁,进行科学规范的主觉验光。112例224只眼矫正视力均在4.9以上,且双眼矫正视力相差不超过一行。远矫基础上,通过FCC初步确定加光度数、NRA/PRA精确近附加、试镜架佩戴和阅读适应以确定最终的验配处方。将最终处方中的ADD值与根据年龄计算出来的经验性ADD用统计学软件SPSS17.0进行统计学分析。结果:实际验配中ADD结果与经验性ADD差异有显著性。结论:临床老视验配应根据实际被测眼的调节参数进行精确的调整以确定ADD值,而不能简单地按照经验公式开出处方。

Objective： To analyze the importance of the subjective refractions for presbyopic ADD.Methods： 112 presbyopic patients, aged 42-79 years, were enrolled as subjects and underwent subjective refaractions. All these 112 cases, 224 eyes had corrected visual acuities of 4.9 and the differences in visual acuity between the two eyes were no more than one line. On the base of both eyes, determine the presbyopic accommodation function including tentative ADD, NRA/PRA, and the measurement of accommodation. The ADD of the actual tests and theoretical assessments were compared and statistically analyzed with SPSS 17.0. Result： There were significant differences between the actual ADD and theoretical results.Concluslon： The exact clinical test for an ADD should be based on the actual accommodation of the eyes, and not on the empirical formula.