title: Hemifield slide from traumatic optic chiasmopathy.
abstract: A 56-year-old man suffered a high velocity linear acceleration closed head injury, resulting in skull fractures including bone dehiscence at the planum sphenoidale and tuberculum sellae. After regaining consciousness, he reported blurry vision and episodic diplopia. Visual field testing showed a bitemporal hemianopia. Ocular motility testing uncovered no misalignment. Brain MRI revealed post-traumatic encephalomalacia within the optic chiasm, resulting in the visual field defect and subsequent hemifield slide. Normally, cerebral processing of overlap between the visual fields prevents hemifield slide, which is caused by episodic loss of visual field overlap with subsequent slipping or sliding apart of images.
authors.affiliation: NorthShore University Health System, 2650 Ridge Avenue, Evanston, IL 60201, USA. Electronic address: JPula@NorthShore.org.
authors.forename: John H
authors.initials: JH
authors.lastname: Pula
authors.affiliation: University of Illinois College of Medicine, Peoria, IL, USA.
authors.forename: Matthew
authors.initials: M
authors.lastname: Fischer
authors.affiliation: University of Illinois College of Medicine, Peoria, IL, USA.
authors.forename: Jorge C
authors.initials: JC
authors.lastname: Kattah
mesh_terms: D004172:Diplopia / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D004678:Encephalomalacia / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D007839:Functional Laterality; D016489:Head Injuries, Closed / Q000150:complications*; D006423:Hemianopsia / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009897:Optic Chiasm / Q000293:injuries / Q000473:pathology / Q000503:physiopathology; D058609:Visual Field Tests
keywords: Bitemporal hemianopia; Bitemporal hemianopsia; Hemifield slide; Hemifield slip; Traumatic optic chiasmopathy