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What is Hemianopsia?

Description of the condition

Hemianopsia, also known as hemianopia, is a condition in which a person loses vision in half of their visual field.


  • Horizontal hemianopsia
  • Vertical hemianopsia
  • Lower half hemianopsia
  • Upper half hemianopsia


Symptoms of hemianopsia include loss of vision in half of the visual field, sometimes with delayed detection of objects and people on this side.


Hemianopsia can be caused by a stroke, head injury, brain tumor, or other problems with the nervous system.


Various tests, including visual field testing, computerized tomography, or magnetic resonance imaging, may be used to diagnose hemianopsia.


Treatment of hemianopsia may include visual rehabilitation, therapy, and in rare cases, surgical intervention depending on the cause of the condition.


Preventing hemianopsia is related to preventing the causes that can lead to this condition, such as stroke or head injury.


Hemianopsia is diagnosed and treated by neurologists, ophthalmologists, and rehabilitation specialists.

Note: This material is provided for informational purposes only and is not medical advice.