NR ABQS
AU Brazis,P.W.; Lee,A.G.; Graff-Radford,N.; Desai,N.P.; Eggenberger,E.R.
TI Homonymous visual field defects in patients without corresponding structural lesions on neuroimaging
QU Journal of Neuro-Ophthalmology 2000 Jun; 20(2): 92-6
PT journal article
AB Homonymous visual field defects usually occur with structural processes affecting retrochiasmal visual pathways. The responsible lesion is usually evident on magnetic resonance imaging or on other neuroimaging studies. When results of neuroimaging are normal, functional illness is often suspected. The authors report four patients with homonymous visual field defects who presented with no evident corresponding lesion on magnetic resonance or computed tomography imaging. Etiologies for the visual field defects included the Heidenhain variant of Creutzfeldt-Jakob disease, degenerative dementia, subtle occipital ischemia demonstrated only on positron-emission tomography scanning, and nonketotic hyperglycemia. Clinicians should be aware of the alternative etiologies of organic homonymous visual field loss in patients with normal neuroimaging.
MH Aged; Brain Ischemia/*complications/diagnosis; Case Report; Creutzfeldt-Jakob Syndrome/*complications/diagnosis; Dementia/complications/diagnosis; Electroencephalography; Female; Hemianopsia/diagnosis/*etiology; Human; Hyperglycemia/*complications/diagnosis; Magnetic Resonance Imaging; Male; Middle Age; Occipital Lobe/*blood supply; Perimetry; Tomography, X-Ray Computed; Visual Acuity; *Visual Fields
AD Department of Neurology, Mayo Clinic-Jacksonville, Florida 32224, USA
SP englisch
PO USA