Definitions for "HEMIANOPSIA"
heh-mee-an-OP-see-uh Reduced vision or blindness in one half of the field of vision in either or both eyes.
(or hemianopia). Loss of one half of the visual field of one or both eyes, referred to as unilateral or bilateral hemianopsia. See visual field defects.
loss of sight in one half of the visual field. damage to either middle cerebral artery can cause This blindness affects the contralateral aspect of both visual fields. For example, a blockage in the right middle cerebral artery will cause left hemianopsia or blindness in the left visual field of both eyes.