Ischemic optic neuropathy is a devastating but, fortunately, infrequent complication of various surgical procedures, particularly those characterized by hypotension and a loss of large volumes of blood. We present a patient with postoperative blindness secondary to posterior ION with MR findings of patchy enhancement of the optic nerves. While MR changes with ION is thought to be unusual, optic nerve enhancement with ION may be more common than previously suspected. It is important for radiologists to recognize the MR findings of ION, particularly when evaluating patients with postprocedure blindness.
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