A Traumatic Bitemporal Hemianopia with Macular Sparing
Niphon Chirapapaisan MD*, Alfredo A Sadun MD, PhD**
Affiliation : * Department of Ophthalmology, Faculty of Medicine, Siriraj Hospital, Mahidol University ** Doheny Eye Institute and the Department of Ophthalmology, Keck School of Medicine of the University of Southern California, Los Angeles, CA
Traumatic chiasmal syndrome is a rare complication of closed head trauma. It often presents as bitemporal hemianopia and may be associated with other neurological signs. The authors report a case of a 47-year-old man who had sustained severe frontal head trauma from a motor vehicle accident that caused multiple cranial fractures and prolonged loss of consciousness. He was subsequently diagnosed with traumatic chiasmal syndrome. Tangent field testing revealed bitemporal hemianopias with some macular sparing. Macular sparing was not found on the central 30-2 pattern of Humphrey visual field test.
Keywords : Traumatic chiasmal syndrome, Bitemporal hemianopia; Macular sparing, Microsaccades
