Partial or complete loss of vision in one half of the visual field(s) of one or both eyes. Subtypes include altitudinal hemianopsia, characterized by a visual defect above or below the horizontal meridian of the visual field. Homonymous hemianopsia refers to a visual defect that affects both eyes equally, and occurs either to the left or right of the midline of the visual field. Binasal hemianopsia consists of loss of vision in the nasal hemifields of both eyes. Bitemporal hemianopsia is the bilateral loss of vision in the temporal fields. Quadrantanopsia refers to loss of vision in one quarter of the visual field in one or both eyes.

Descriptor ID	D006423
MeSH Number(s)	C10.597.751.941.512 C11.966.075.500 C23.888.592.763.941.512
Concept/Terms	Hemianopsia Hemianopsia Hemianopsias Hemianopia Hemianopias Quadrantanopsia Quadrantanopsia Quadrantanopsias Quadrantanopia Quadrantanopias Bitemporal Hemianopia Bitemporal Hemianopia Bitemporal Hemianopias Hemianopia, Bitemporal Hemianopias, Bitemporal Hemianopsia, Bitemporal Bitemporal Hemianopsia Bitemporal Hemianopsias Hemianopsias, Bitemporal Hemianopsia, Homonymous Hemianopsia, Homonymous Hemianopsias, Homonymous Homonymous Hemianopsia Homonymous Hemianopsias Homonymous Hemianopia Hemianopia, Homonymous Hemianopias, Homonymous Homonymous Hemianopias Altidudinal Hemianopia Altidudinal Hemianopia Altidudinal Hemianopias Hemianopia, Altidudinal Hemianopias, Altidudinal Altitudinal Hemianopsia Altitudinal Hemianopsias Hemianopsia, Altitudinal Hemianopsias, Altitudinal Binasal Hemianopia Binasal Hemianopia Binasal Hemianopias Hemianopia, Binasal Hemianopias, Binasal Hemianopsia, Binasal Binasal Hemianopsia Binasal Hemianopsias Hemianopsias, Binasal

Below are MeSH descriptors whose meaning is more general than "Hemianopsia".

Below are MeSH descriptors whose meaning is related to "Hemianopsia".

Below are MeSH descriptors whose meaning is more specific than "Hemianopsia".