hemianopsia

[ hem-ee-uh-nop-see-uh ]

/ ˌhɛm i əˈnɒp si ə /

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noun Ophthalmology.

any of several conditions in which there is blindness in half of the visual field, involving one or both eyes.

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Also hem·i·a·no·pi·a

[hem-ee-uh-noh-pee-uh], /ˌhɛm i əˈnoʊ pi ə/, hemiopia.

Also called hemiscotosis.

Origin of hemianopsia

First recorded in 1880–85; hemi- + an-¹ + -opsia

Pressure on the optic chiasma, for example by a tumour of the pituitary body, is associated with bilateral temporal hemianopsia.
Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition.|Alexander Miles