positional nystagmus

例句：

1. 1. The patient's eyes moved in a pattern that was consistent with the positional nystagmus.
   患者的眼球移动模式与位置性眼震一致。
2. 2. The researcher found that the patient had a condition known as positional nystagmus.
   研究者发现患者患有一种名为位置性眼震的疾病。
3. 3.The doctor explained that positional nystagmus can be caused by a variety of factors, including eye strain and fatigue.
   医生解释说，位置性眼震可以由多种因素引起，包括眼部疲劳和劳累。