title: Bilateral homonymous hemianopsia due to tentorial herniation, with sparing of central vision: case report.
abstract: Cases of complete bilateral homonymous hemianopsia with sparing of central vision that are caused by bilateral tentorial herniation are extremely rare. We describe one such case resulting from severe head trauma, the first to be reported in which magnetic resonance images showed clear evidence of the responsible lesion. The causes of bilateral homonymous hemianopsia with sparing of central vision and the possible mechanisms whereby macular sparing may arise are discussed.
authors.affiliation: Department of Neurosurgery, Kitasato University School of Medicine, Kanagawa, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Tanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Miyasaka
authors.forename: K
authors.initials: K
authors.lastname: Yada
authors.forename: K
authors.initials: K
authors.lastname: Mukuno
mesh_terms: D000293:Adolescent; D001924:Brain Concussion / Q000150:complications / Q000503:physiopathology; D002544:Cerebral Infarction / Q000150:complications* / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology*; D004677:Encephalocele / Q000503:physiopathology*; D005500:Follow-Up Studies; D005625:Frontal Lobe / Q000293:injuries / Q000503:physiopathology; D015600:Glasgow Coma Scale; D016489:Head Injuries, Closed / Q000150:complications* / Q000503:physiopathology; D006423:Hemianopsia / Q000503:physiopathology*; D006801:Humans; D007427:Intracranial Pressure / Q000502:physiology; D008279:Magnetic Resonance Imaging; D008297:Male; D009460:Neurologic Examination; D014057:Tomography, X-Ray Computed; D014793:Visual Cortex / Q000098:blood supply*; D058609:Visual Field Tests; D014794:Visual Fields / Q000502:physiology*