We read the article by Panagiotis Kassavetis et al 1 with great interest. They provided a detailed summary of the physiological background and clinical findings of eye movement disorders in movement disorders, which was helpful for clinical identification and diagnosis. We were particularly interested in the authors' description of oculogyric crisis (OGC) and Wilson's disease (WD) eye movement disorders. However, the authors did not mention the occurrence of OGC in WD. Therefore, we would like to supplement this review by providing clinical features and a video of a case of OGC in WD.A 30-year-old Chinese female patient presented with progressive walking difficulties, dysarthria, and sustained upward gaze of both eyes. The patient had no previous history of encephalitis or psychiatric treatment, and there was no family history of similar neurological diseases. On examination, she was fully conscious and cooperative. She had equal and reactive pupils. Over a span Video 1. Segment 1: The patient's pursuit eye movement examination is normal. Segment 2: The patient's eyes staring upwards involuntarily, with the head tilting back. Segment 3: During an OGC attack, the patient could not close her eyes voluntarily.