Optic neuropathy from the use of intracranial muslin

Following repair of an anterior communicating artery aneurysm with McFadden clips and muslin, a 32-year-old woman developed a steroid-responsive optic neuropathy. When she was explored, a sterile abscess with surrounding fibrotic tissue involving the muslin was found adjacent to the right optic nerve. The patient's vision improved following removal of the abscess.