Fig. 7. Lesion of parietal optic radiation. A 35-year-old woman with 3 weeks of left-sided headache. A. Visual fields showed partial right inferior quadrantic defect. B. MRI showed infarct of parietal lobe, involving optic radiations. (From Rosen ES, Eustace P, Thompson HS, Cumming WJK [eds]: Neuro-Ophthalmology. London: Mosby, 1998.)