The conventional optokinetic nystagmus ( OKN) is elicited by a large-field moving pattern. The study of OKN could contribute to the mechanism of oculomotor control and to the ophthalmological diagnosis. Exercise. 大范围运动图形能诱发传统的视动震颤(optokineticnystagmus,OKN)眼动,它对于眼运动(oculomotor)控制研究及临床有关疾病诊断有重要意义。