Mok D, Ro A, Cadera W, Crawford J D, Vilis T
Department of Ophthalmology, Ivey Institute, Victoria Hospital, London, Ontario, Canada.
Vision Res. 1992 Nov;32(11):2055-64. doi: 10.1016/0042-6989(92)90067-s.
When visually fixating targets on an isovergence surface, the position of each eye was constrained to a plane. Thus, Listing's law holds during vergence. The planes were, however, rotated temporally with respect to those when viewing distant targets. The effect of this rotation was to produce a torsion which depended on eye elevation; extorsion of the two eyes for downward gaze and intorsion for upward gaze. The saccadic velocity command was relatively unaffected during vergence. Computer simulations suggest that the saccadic tonic command and the vergence command interact multiplicatively in three dimensions.
当双眼在等聚散面上注视目标时，每只眼睛的位置被限制在一个平面内。因此，聚散过程中遵循利斯廷定律。然而，这些平面相对于注视远处目标时的平面发生了颞侧旋转。这种旋转的效果是产生一种取决于眼睛高度的扭转；双眼向下注视时外旋，向上注视时内旋。扫视速度指令在聚散过程中相对不受影响。计算机模拟表明，扫视张力指令和聚散指令在三维空间中以乘法方式相互作用。
