Hung G K, Ciuffreda K J, Semmlow J L
Doc Ophthalmol. 1986 Feb 28;62(2):165-79. doi: 10.1007/BF00229128.
The steady-state characteristics of the accommodation and vergence systems can be described by a model with six major oculomotor parameters. These include the system biases (tonic vergence and accommodation) and forward-loop gains (vergence and accommodative gains), as well as the interactive system gains (AC/A and CA/C ratios). We investigated these parameters in two populations: (1) 22 visually-normal asymptomatic individuals, and (2) 21 visually-abnormal symptomatic individuals before and after conventional orthoptic therapy. Two parameters related to system gain differentiated between the symptomatic and asymptomatic individuals: the slope of the fixation disparity curve with accommodation open-looped and the slope of the accommodative response/stimulus curve. Following orthoptic therapy, 4 static model parameters and 1 dynamic clinical parameter showed changes toward the normal mean; this included tonic accommodation, slope of the fixation disparity curve with accommodation closed-loop (2.5D), slope of the accommodative response/stimulus curve, the CA/C ratio, and the +/- 2D monocular accommodative flipper rate.
调节和聚散系统的稳态特征可用一个具有六个主要眼动参数的模型来描述。这些参数包括系统偏差（张力性聚散和调节）和前向环增益（聚散增益和调节增益），以及交互系统增益（AC/A和CA/C比率）。我们在两组人群中研究了这些参数：（1）22名视力正常的无症状个体，以及（2）21名视力异常的有症状个体在传统视光学治疗前后的情况。与系统增益相关的两个参数在有症状和无症状个体之间存在差异：调节开环时注视差异曲线的斜率以及调节反应/刺激曲线的斜率。在视光学治疗后，4个静态模型参数和1个动态临床参数显示出向正常均值的变化；这包括张力性调节、调节闭环时注视差异曲线的斜率（2.5D）、调节反应/刺激曲线的斜率、CA/C比率以及±2D单眼调节翻转率。
