后天性水平或垂直位单眼震颤不常见。其原因包括多发性硬化、脑干病变、单眼弱视、点头状痉挛和可能的小脑外伤。作者报告一例5岁男孩,于3岁时双亲始发现左眼垂直位轻度跳动,4岁时眼科检查双眼视力尚好,诊断为点头状痉挛。后患眼发生视神经萎缩和视力丧失。视力左眼光感不确,瞳孔传入神经障碍,无眼球突出,眼球运动不受限,可见一 Acquired horizontal or vertical nystagmus uncommon. The causes include multiple sclerosis, brainstem lesions, monocular amblyopia, nodding spasms and possible cerebellar trauma. The authors report that a 5-year-old boy had a slight beating of the vertical left eye at 3 years of age and an ocular examination at 4 years old with a good visual acuity and a diagnosis of nodding spasm. Ocular optic neuropathy after atrophy and loss of vision. Visual left eye light sense of uncertainty, pupil afferent afferent disorder, no eyeball prominent, eye movement is not limited, we can see a