Wesson M D, Amos J F
Am J Optom Physiol Opt. 1985 Feb;62(2):88-94. doi: 10.1097/00006324-198502000-00004.
Norms of clinically useful techniques provide a means to measure and compare patient performance against a large clinical population of asymptomatic subjects. This study establishes mean values for vergence ranges (break and recovery) at 6 m and 40 cm using hand-held rotary prisms. Secondary effects of eye preference (dominance), order of prism presentation, and differences of results between clinicians were evaluated and found to have no statistical significance. This is another example of the trend to establish normal values for functions routinely measured in the optometric examination. Values are now available for the most commonly used vergence testing methods: the binocular rotary prism in the phoropter, the prism bar, and the handheld rotary prism. Testing can now be accomplished with or without a phoropter and comparisons can be made to normal values.
临床实用技术规范提供了一种手段，可用于将患者的表现与大量无症状受试者的临床群体进行测量和比较。本研究使用手持旋转棱镜确定了6米和40厘米处的聚散范围（分开和恢复）的平均值。对眼优势（主导眼）的次要影响、棱镜呈现顺序以及临床医生之间结果的差异进行了评估，发现无统计学意义。这是为验光检查中常规测量的功能建立正常值趋势的又一个例子。现在已有最常用的聚散测试方法的相关值：综合验光仪中的双眼旋转棱镜、棱镜杆和手持旋转棱镜。现在无论有无综合验光仪都可以完成测试，并且可以与正常值进行比较。
