A 60-year-old woman presented with 3 episodes of transient visual loss to the left side. Her visual acuity was 20/20 bilaterally, but visual field patterns demonstrated a left homonymous hemianopia (A). Her temporal crescent was intact on the left side, and an MRI scan (B) confirmed the presence of a right occipital lobe stroke (straight arrow) compatible with an infarct and sparing of the anterior visual cortex (curved arrow).