Wick B, London R
Am J Optom Physiol Opt. 1987 Apr;64(4):227-40. doi: 10.1097/00006324-198704000-00001.
Accommodation and vergence have a complex relation which occasionally breaks down, resulting in a loss of visual efficiency along with symptoms of discomfort associated with use of the eyes. Studies of accommodation/vergence interactions and tonic vergence disorders indicate that, using classical analysis techniques, separate methods are frequently necessary to determine whether existing binocular deficiencies are causing reported symptoms. The problem with current systems of binocular visual function analysis is that the vergence error which exists under binocular conditions is often not the same as that which is measured under monocular conditions. A rationale for, and technique of, analyzing binocular function using results of tests made under binocular conditions is described. This analysis incorporates the concepts of CA/C, proximal vergence (PV), and fixation disparity along with several accommodative measures (facility, lag, sustaining ability, and accuracy). By identifying relevant binocular components and the interrelations, the clinician should be better able to assess the contribution of each and examine which may be modified most easily by vision therapy, lenses, and/or prism intervention.
调节和聚散有着复杂的关系，这种关系偶尔会出现紊乱，导致视觉效率下降以及与用眼相关的不适症状。对调节/聚散相互作用和紧张性聚散障碍的研究表明，使用经典分析技术时，通常需要采用不同方法来确定现有的双眼功能缺陷是否导致了所报告的症状。当前双眼视觉功能分析系统存在的问题是，双眼条件下存在的聚散误差往往与单眼条件下测量的聚散误差不同。本文描述了一种基于双眼条件下测试结果分析双眼功能的基本原理和技术。该分析纳入了CA/C、近感知聚散（PV）、注视差异等概念以及几种调节测量指标（调节灵活度、调节滞后、持续调节能力和调节准确性）。通过识别相关的双眼组成部分及其相互关系，临床医生应能更好地评估各部分的作用，并检查哪些部分最容易通过视觉治疗、镜片和/或棱镜干预进行调整。
