Flanagan J G, Kothe A C
Electrodiagnostic Service, University of Waterloo, Ontario, Canada.
Ophthalmic Physiol Opt. 1990 Apr;10(2):205-10. doi: 10.1111/j.1475-1313.1990.tb00978.x.
A 48-year-old man presented with a unilateral visual disturbance including reduced visual acuity and decreased sensitivity of the temporal visual field. He was initially diagnosed as having optic neuritis. Four months later the condition not only remained unresolved, but showed signs of progression. This presentation was atypical for optic neuritis and further detailed investigation was warranted. The patient's symptoms, along with multi-channel topographic visual evoked potentials and quantitative visual field analysis, were more indicative of a diagnosis of a space occupying lesion. A CT scan confirmed the presence of an intracranial tumour which was surgically excised. Pre- and post-operative visual function are described. The case report highlights the difficulty of differential diagnosis of optic neuritis and the clinical value of the appropriate and judicious use of multi-channel evoked potentials.
一名48岁男性出现单侧视觉障碍，包括视力下降和颞侧视野敏感度降低。他最初被诊断为视神经炎。四个月后，病情不仅未得到缓解，反而有进展迹象。这种表现不符合视神经炎的典型症状，因此有必要进行更详细的检查。患者的症状，结合多通道地形图视觉诱发电位和定量视野分析，更倾向于诊断为占位性病变。CT扫描证实存在颅内肿瘤，遂进行手术切除。文中描述了手术前后的视觉功能。该病例报告强调了视神经炎鉴别诊断的困难，以及合理明智地使用多通道诱发电位的临床价值。
