Retinal migraine is not uncommon, but permanent sequelae are rare. We
describe the case of a 21-year-old woman who had suffered from retinal
migraine for five years. After a typical migraine attack a left nasal
quadranopsia persisted. Fluorescein angiography showed a branch retin
al arterial occlusion. Other causes were ruled out by appropriate labo
ratory techniques. Her visual field defect has persisted for eleven mo
nths.