 | This article needs more reliable medical references for verification or relies too heavily on primary sources. (October 2017) |  |
| Hemianopsia | |
|---|---|
 | |
| Paris as seen with full visual fields | |
| Specialty | Ophthalmology, neurology  |
Hemianopsia, or hemianopia, is a loss of vision or blindness (anopsia) in half the visual field, usually on one side of the vertical midline. The most common causes of this damage are stroke, brain tumor, and trauma.[1]
This article deals only with permanent hemianopsia, and not with transitory or temporary hemianopsia, as identified by William Wollaston PRS in 1824.[2] Temporary hemianopsia can occur in the aura phase of migraine.
- ^ Hemianopia (Hemianopsia) Archived 16 May 2017 at the Wayback Machine, helpforvisionloss.com
- ^ Gazzaniga, Michael; Ivry, Richard; Mangun, George (2013). Cognitive Neuroscience: The Biology of the Mind (4th ed.). W. W. Norton & Company. pp. 9. ISBN 978-0393913484.