Right homonymous superior quadrantanopia. The areas of the field lost in each eye are shown as black areas. This visual field defect is characteristic of damage to Meyer's loop on the left side of the brain.
Specialty
Ophthalmology
Quadrantanopia,quadrantanopsia, refers to an anopia (loss of vision) affecting a quarter of the visual field.
It can be associated with a lesion of an optic radiation.[1] While quadrantanopia can be caused by lesions in the temporal and parietal lobes of the brain, it is most commonly associated with lesions in the occipital lobe.[2]
^Yale- Cranial Nerve 2, pg. 11 Archived June 7, 2008, at the Wayback Machine
^Kolb, B & Whishaw, I.Q. Human Neuropsychology, Sixth Edition, p.361; Worth Publishers (2008) ISBN 978-0-7167-9586-5
Quadrantanopia, quadrantanopsia, refers to an anopia (loss of vision) affecting a quarter of the visual field. It can be associated with a lesion of an...
unilateral division of the optic radiation, the consequence is called quadrantanopia, which implies that only the respective superior or inferior quadrant...
after the chiasm (homonymous field defects like homonymous hemianopia, Quadrantanopia, homonymous scotomata) Other characterisations are: Altitudinal field...
compress the upper part of the chiasma, typically a craniopharyngioma. Quadrantanopia (quadrantanopsia or quadrantic hemianopsia) is decreased vision or blindness...
(including cerebral palsies) may affect the optic radiations, and can cause quadrantanopias. Also vascular occlusions, tumors, trauma, and temporal lobectomy for...
Simon Townshend from the album Animal Soup A colloquialism for superior quadrantanopia, a visual field defect "The Preacher and the Slave", a song written...
visual field typically caused by injury in the primary visual cortex. Quadrantanopia is a type of blindness that destroys only a part of the visual field...
dysgraphia and dyslexia, dyscalculia, contralateral hemianopia, or lower quadrantanopia. Destruction to the inferior parietal lobule of the non-dominant hemisphere...
occurs simultaneously with bilateral homonymous hemianopia or homonymous quadrantanopia. The exact mechanism behind this phenomenon is still uncertain. The...
adult-onset at 50–74 years. People may present with bitemporal inferior quadrantanopia leading to bitemporal hemianopsia, as the tumor may compress the optic...
field loss Miosis cause decreased peripheral sensitivity Hemianopsia Quadrantanopia Scotoma Visual field Homonymous hemianopsia Binasal hemianopsia Bitemporal...
inferior quadrantanopia, if originating inferior to the optic chiasm the visual field defect will first appear as bitemporal superior quadrantanopia. Lateral...
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