This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S., Subject name: Medicine
[{'content': 'Which one of the following patterns of visual disturbance would be predicted to be demonstrable on examination of this patient? \nSelect and explain. \nA. Inferior hemifield loss, B. Temporal quadrantanopsia, C. Uniocular blindness, D. Macular sparing hemianopia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer A. Inferior hemifield lossDilated ophthalmoscopy of this left eye illustrates a nonrefractile plaque in the proximal superior retinal artery with retinal whitening in the superior macula signifying retinal ischemia. Superior retinal ischemia will result in a defect in the inferior visual field, as in this patient. A diagnosis of hemiretinal arterial occlusion was made.', 'role': 'assistant'}]