ⓘ Quadrantanopia

                                     

ⓘ Quadrantanopia

Quadrantanopia, quadrantanopsia, refers to an anopia affecting a quarter of the field of vision.

It may be associated with lesions of the optic radiation. While quadrantanopia can be caused by lesions of the temporal lobe and parietal lobe, is most commonly associated with lesions in the occipital lobe.

                                     
  • lesion only exists in one optic radiation, the consequence is called quadrantanopia which implies that only the respective superior or inferior quadrant
  • hemianopsia Bitemporal hemianopsia Superior hemianopia Inferior hemianopia Quadrantanopia The term anopsia comes from the Ancient Greek ἀν - an - un - and ὄψις
  • See also Health Exercise Nutrition Q fever Qazi Markouizos syndrome Quadrantanopia Quadriceps sparing myopathy Quadriceps tendon rupture Quadriparesis
  • dysgraphia and dyslexia, dyscalculia, contralateral hemianopia, or lower quadrantanopia Destruction to the inferior parietal lobule of the non - dominant hemisphere
  • Simon Townshend from the album Animal Soup A colloquialism for superior quadrantanopia a visual field defect The Preacher and the Slave a song written
  • compress the upper part of the chiasma, typically a craniopharyngioma. Quadrantanopia quadrantanopsia or quadrantic hemianopsia is decreased vision or blindness
  • 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
  • permanent or temporary anterograde amnesia. Contralateral homonymous upper quadrantanopia sector anopsia Complex hallucinations smell, sound, vision, memory
  • leukoencephalopathy Progressive supranuclear palsy Prosopagnosia Pseudotumor cerebri Quadrantanopia Quadriplegia Rabies Radiculopathy Ramsay Hunt syndrome type I Ramsay
  • letters drawn on hand, with eyes shut. Contralateral homonymous Lower quadrantanopia Asymmetry of optokinetic Nystagmus OKN Sensory Seizures Extinction
  • inferior quadrantanopia if originating inferior to the optic chiasm the visual field defect will first appear as bitemporal superior quadrantanopia Lateral