Homonymous hemianopia captured on automated perimetry during a migraine episode.

摘要

A 39-year-old man with known history of migraine experienced an episode of right-sided headache and visual disturbances. Visual field testing using automated perim-etry was carried out during the episode and showed an incongruous homonymous hemianopia (Fig. 1a). The migraine episode lasted for about 30 min and upon resolution, repeat perimetry showed normal visual fields (Fig. 1b). Homonymous hemianopia during a migraine attack has been described, but this is the first illustrative image in medicine showing the effect and its resolution. Much debate still exists regarding the pathophysiology of migraines. The transient nature of the field defect in this case supports the role of vasospasm with neurological defect reflecting an area of vascular compromise that is fleeting and resolves with resolution of the vascular flow.