Abstract
A 45-year-old male pedestrian was struck by a motor vehicle moving at high speed. Upon initial assessment, the patient scored a 3T on the Glasgow Coma Scale. The patient suffered multiple facial and sinus fractures, a right orbital wall fracture, and a depressed open frontal skull fracture with visible brain parenchyma. Due to the nature of the brain injury, the patient was taken to the operating room emergently for a right frontal craniectomy. The patient required prolonged hospitalization followed by transfer to a rehabilitation facility.Six weeks after the accident, the patient underwent an extensive neuro-ophthalmologic evaluation. At that time, visual acuity was 20/200 in both eyes. On visual field testing, a bitemporal hemianopia was noted. Ophthalmoscopic examination revealed bilateral temporal disc pallor, right greater than left. Neuroimaging demonstrated damage to the optic chiasm. Although rare, head trauma may cause a bitemporal hemianopia secondary to optic chiasmal injury.
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