Hemianopsia, or hemianopia, is a visual field loss on the left or right side of the vertical midline. It can affect one eye but usually affects both eyes.<unk>  (or<unk>  is hemianopic visual field loss on the same side of both eyes.<unk>  occurs because the right half of the brain has visual pathways for the left hemifield of both eyes, and the left half of the brain has visual pathways for the right hemifield of both eyes. When one of these pathways is damaged, the corresponding visual field is lost.
Homonymous hemianopsia
Binasal hemianopsia
Agraphesthesia
Bitemporal hemianopsia
Lexical–gustatory synesthesia
Hemianopsia
Palinopsia
Finger agnosia