Abstract
A 79-year-old woman with persistent cortical blindness caused by bilateral temporo-occipital infarctions was followed for 8 months. She had no light or visual motion perception. Our patient's visual imagery was intact, which was demonstrated when drawing elementary shapes; however, her drawing of objects was poor. Optokinetic nystagmus could not be elicited, but the vestibulo-ocular reflex (VOR) seemed intact. Although she was able to suppress her VOR by `fixating' her outstretched hand which moved in phase with her head and body, she showed saccadic tracking eye movements in an attempt to visually `follow' the self-generated movements of her outstretched hand, while her body and head were stationary. Such saccadic tracking seemed to be different from the previously described smooth tracking of self-moved targets by patients with acquired blindness caused by anterior visual pathway dysfunction.
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