The visual change from being unaware of visual defect to detecting binocular visual loss indicated the importance of measuring monocular visual acuity and visual field to clinical ophthalmologist.

• 病人临床视力、视野变化情形，向未察觉两眼视野的缺损至突发性两眼视力的丧失，提醒临床眼科医师单眼视力、视野测量的重要性，尤其是周边视野的评估。