Ohno T, Yoshida M, Kawai K
Department of Ophthalmology, Jikei University School of Medicine.
Nippon Ganka Gakkai Zasshi. 1996 Feb;100(2):159-62.
The responses of optokinetic nystagmus (OKN) were examined in 11 patients with congenital nystagmus (CN). When the nystagmus was almost suppressed in a dark room, the OKN stimulation was started. There were three different type of OKN responses: bilaterally reversed OKN, unilaterally, reversed OKN and pendular oscillation. Three of 11 patients had normal direction in the slow phase of OKN in one direction, but reversed OKN in the other direction. These findings suggest that two different directional slow eye movement subsystems (rightward and leftward) exist in CN patients and that the mechanism of CN is unilateral or bilateral dysfunction of the two different directional slow eye movement subsystems.
对11例先天性眼球震颤（CN）患者的视动性眼球震颤（OKN）反应进行了检查。当在暗室中眼球震颤几乎被抑制时，开始进行OKN刺激。OKN反应有三种不同类型：双侧反向OKN、单侧反向OKN和摆动性振荡。11例患者中有3例在一个方向上OKN慢相方向正常，但在另一个方向上为反向OKN。这些发现表明，CN患者存在两个不同方向的慢眼球运动子系统（向右和向左），且CN的机制是这两个不同方向的慢眼球运动子系统的单侧或双侧功能障碍。
