This case had an elderly patient with sudden onset visual change and an underlying infarct in the left occipital region. The mild symptoms of dizziness and incoordination can be part of visual disturbance but are also controlled by a similar blood supply (the brain stem and cerebellum are posterior circulation structures).  Further investigation of this patient with cardiac workup and vessel imaging may be of benefit.  Treatment for this is as for other strokes, and thrombolysis is time-dependent.

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Thanks to Dr David Cuete for their contribution of this case.  The original is available here.

Also thanks to Dr Frank Gaillard for the excellent diagrams (full diagram here).