Hemianopia or Hemianopsia is blindness or a reduction in the field of vision caused by injury to the brain.
The NEI does not have a fact sheet on homonymous hemianopia.
For more information about hemianopia, please visit the following webpages:
North American Neuro-Ophthalmolog Society, Homonymous Hemianopia
Low Vision Centers of Indiana, Hemianopsia (Hemianopia)
Primary research responsibility for neurological and stroke disorders belong to the National Institute of Neurological Disorders and Stroke (NINDS) the lead NIH agency in brain research.
NIH Neurological Institute
P.O. Box 5801
Bethesda, MD 20824
Telephone: (800) 352-9424 or (301) 496-5751