Homonymous hemianopsia
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Homonymous hemianopsia is a medical term for a type of partial blindness resulting in a loss of vision in the same visual field of both eyes. It is usually caused by injury to the brain itself such as stroke or trauma, rather than malfunctioning of the eye itself. Vascular and neoplastic (cancerous) lesions of the optic tract or visual cortex can cause a contralateral homonynous hemianopsia.
Homonymous hemianopsia can be broken down as follows:
Homonymous: same
hemi: half of the visual field
anopsia: blindness
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