Lyon Don W, Goss David A, Horner Douglas, Downey John P, Rainey Bill
Indiana University School of Optometry, 800 East Atwater Avenue, Bloomington, IN 47405, USA.
Optometry. 2005 Oct;76(10):593-9. doi: 10.1016/j.optm.2005.08.014.
The use of a phoropter for measuring phorias and vergences in children is common in the optometric profession. For young children, the use of the phoropter can be confusing, making it difficult to obtain accurate measurements. Free space testing allows for direct observation of the eyes in a natural environment and is easier for children to understand the directions. The normal values for phorias and vergences used with children are derived from testing with a phoropter or free space measurements with mostly adult patients.
The Benton-IU Project was a large multidisciplinary study of factors affecting school performance conducted by the Indiana University School of Optometry and the Indiana University Department of Speech and Hearing with the cooperation of the Benton Community School Corporation (Benton County, Indiana). This project allowed the authors to obtain data on modified Thorington phorias and prism bar vergences from a nonselected group of first and fourth graders as part of an eye/vision examination.
In this report, central tendency and variability statistics for modified Thorington and prism bar vergences are reported based on the data from the Benton-IU Study.
The data presented in this report can be used by optometrists when deciding if the patient's phorias and vergences are within normal limits for children in the first through fourth grades.
在验光行业中，使用综合验光仪测量儿童的隐斜视和聚散度很常见。对于幼儿来说，使用综合验光仪可能会让他们感到困惑，从而难以获得准确的测量结果。自由空间测试可以在自然环境中直接观察眼睛，并且儿童更容易理解测试指示。与儿童相关的隐斜视和聚散度的正常值来自于使用综合验光仪进行的测试，或者主要是对成年患者进行的自由空间测量。
本顿-印第安纳大学项目是印第安纳大学验光学院和印第安纳大学言语与听力系在本顿社区学校公司（印第安纳州本顿县）的合作下进行的一项关于影响学习成绩因素的大型多学科研究。该项目使作者能够在对一组未经过筛选的一年级和四年级学生进行眼/视力检查时，获取关于改良的索林顿隐斜视和棱镜棒聚散度的数据。
在本报告中，基于本顿-印第安纳大学研究的数据，报告了改良的索林顿隐斜视和棱镜棒聚散度的集中趋势和变异性统计数据。
验光师在判断患者的隐斜视和聚散度是否在一至四年级儿童的正常范围内时，可以参考本报告中呈现的数据。
