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Loss of vision in a quarter of the visual field
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
Quadrantanopia
Loss of vision in half the visual field
compress the upper part of the chiasma, typically a craniopharyngioma. Quadrantanopia (quadrantanopsia or quadrantic hemianopsia) is decreased vision or blindness
Hemianopsia
Neural pathway in the visual system
unilateral division of the optic radiation, the consequence is called quadrantanopia, which implies that only the respective superior or inferior quadrant
Optic_radiation
Portion of the parietal lobe of the brain
dysgraphia and dyslexia, dyscalculia, contralateral hemianopia, or lower quadrantanopia. Destruction to the inferior parietal lobule of the non-dominant hemisphere
Inferior_parietal_lobule
Area in visual space that can be seen when the eye fixates a point
after the chiasm (homonymous field defects like homonymous hemianopia, Quadrantanopia, homonymous scotomata) Other characterisations are: Altitudinal field
Visual_field
Body parts responsible for vision
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
Visual_system
Defect in one's visual field
hemianopsia Bitemporal hemianopsia Superior hemianopia Inferior hemianopia Quadrantanopia Stanaszek, Walter F.; Stanaszek, Mary J.; Holt, Robert J.; Strauss,
Anopsia
Brain tumor of pituitary gland embryonic tissue
adult-onset at 50–74 years. People may present with bitemporal inferior quadrantanopia leading to bitemporal hemianopsia, as the tumor may compress the optic
Craniopharyngioma
Visual maladies
(including cerebral palsies) may affect the optic radiations, and can cause quadrantanopias. Also vascular occlusions, tumors, trauma, and temporal lobectomy for
Visual_pathway_lesions
Failure of the brain to process input from one eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Amblyopia
One of the four lobes of the mammalian brain
permanent or temporary anterograde amnesia. Contralateral homonymous upper quadrantanopia (sector anopsia) Complex hallucinations (smell, sound, vision, memory)
Temporal_lobe
See also Health Exercise Nutrition Q fever Qazi–Markouizos syndrome Quadrantanopia Quadriceps sparing myopathy Quadriceps tendon rupture Quadriparesis
List_of_diseases_(Q)
Difference in coloration, usually of the iris but also of hair or skin
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Heterochromia
Tumor of the pituitary gland
inferior quadrantanopia. If originating inferior to the optic chiasm the visual field defect will first appear as bitemporal superior quadrantanopia. Lateral
Pituitary_adenoma
Inflammation of the eyelid
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Blepharitis
Excessive dilation of the pupil
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Mydriasis
leukoencephalopathy Progressive supranuclear palsy Prosopagnosia Pseudotumor cerebri Quadrantanopia Quadriplegia Rabies Radiculopathy Ramsay Hunt syndrome type I Ramsay
List of neurological conditions and disorders
List_of_neurological_conditions_and_disorders
Part of the brain responsible for sensory input and some language processing
letters drawn on hand, with eyes shut. Contralateral homonymous inferior quadrantanopia Asymmetry of optokinetic nystagmus (OKN) Sensory seizures Dominant hemisphere
Parietal_lobe
Inability to focus on distant objects
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Myopia
Inflammation of the cornea of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Keratitis
Mitochondrially inherited degeneration of retinal nerve cells
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Leber's hereditary optic neuropathy
Leber's_hereditary_optic_neuropathy
Clouding of the eye's lens due to excess galactose in the blood
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Galactosemic_cataract
occurs simultaneously with bilateral homonymous hemianopia or homonymous quadrantanopia. The exact mechanism behind this phenomenon is still uncertain. The
Macular_sparing
Inflammation of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Conjunctivitis
Eye condition caused by ultraviolet radiation
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Photokeratitis
Swelling of the eyelid due to infection of an oil gland
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Stye
Type of color vision
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Dichromacy
Eyes not aligning when looking at something
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Strabismus
Inflammation of the conjunctiva by ultraviolet damage
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Actinic_conjunctivitis
Group of eye diseases related to poor retinal and nerve perfusion
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Glaucoma
Retinal disease caused by high amounts of triglycerides in the blood
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Lipaemia_retinalis
Decreased ability to see color or color differences
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Color_blindness
Topics referred to by the same term
Simon Townshend from the album Animal Soup A colloquialism for superior quadrantanopia, a visual field defect "The Preacher and the Slave", a song written
Pie_in_the_Sky
Abnormal intolerance to visual perception of light
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Photophobia
Tool used by eye care professionals
field loss Miosis cause decreased peripheral sensitivity Hemianopsia Quadrantanopia Scotoma Visual field Homonymous hemianopsia Binasal hemianopsia Bitemporal
Humphrey visual field analyser
Humphrey_visual_field_analyser
Medical condition with inflammatory cells inside the front of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Hypopyon
Dysfunction of eye movement
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Nystagmus
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Primary_congenital_glaucoma
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Alon_Harris
Aberration of vision due to asymmetry in the eye's lens or cornea
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Astigmatism
Vision loss due to damage to the macula of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Macular_degeneration
Drooping of the upper eyelid over the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Ptosis_(eyelid)
Bleeding within the whites of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Subconjunctival_bleeding
Worsening ability of the eyes to focus with age
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Presbyopia
Condition making it difficult or impossible to see in relatively low light
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Nyctalopia
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Low_vision_assessment
Medical condition of dry eyes
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Dry_eye_syndrome
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
James_C._Tsai
Visual aura associated with migraine
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Scintillating_scotoma
Genetic form of macular degeneration
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Stargardt_disease
Inability to focus the eye due to ciliary muscle paralysis
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Cycloplegia
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Oculogyric_crisis
Swelling of the conjunctiva
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Chemosis
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Achromatopsia
Deposits within the eye's vitreous humour
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Floater
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Kayser–Fleischer_ring
Form of strabismus in which the eyes turn inward
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Esotropia
Eye disease characterized by leakage of fluid under the retina
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Central serous chorioretinopathy
Central_serous_chorioretinopathy
Eye that appears red due to illness or injury
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Red_eye_(medicine)
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Arlt's_line
Most common genetic condition leading to color blindness
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Congenital red–green color blindness
Congenital_red–green_color_blindness
Bulging of the eye anteriorly out of the orbit
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Exophthalmos
Unequal size of the eyes' pupils
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Anisocoria
Autoimmune eye disease
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Cancer_associated_retinopathy
Decreased ability to see
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Visual_impairment
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Graves'_ophthalmopathy
Inflammatory swelling of the eyelid due to meibomian gland blockage
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Chalazion
Progressive eye disease
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Fuchs'_dystrophy
Visual disturbance
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Oscillopsia
Infectious disease that causes a roughening of the inner surface of the eyelids
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Trachoma
Damage to the eye's retina due to high blood pressure
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Hypertensive_retinopathy
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Allergic_conjunctivitis
Inflammation of the optic nerve
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Optic_neuritis
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Hollenhorst_plaque
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Blue-cone_monochromacy
Inflammation of the uvea of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Uveitis
Type of visual impairment
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Riddoch_syndrome
Gradual retinal degeneration leading to progressive sight loss
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Retinitis_pigmentosa
Eye disease
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Thygeson's superficial punctate keratopathy
Thygeson's_superficial_punctate_keratopathy
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Choroideremia
Brain surgery to treat epilepsy
complication after ATL is a defect in vision known as a homonymous superior quadrantanopia, wherein the upper quarter field of vision on both eyes is altered,
Epilepsy_surgery
Clouding of the lens inside the eye, causing poor vision
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Cataract
Rare congenital disease characterized by external gaze palsy
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Duane_syndrome
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Intraretinal microvascular abnormalities
Intraretinal_microvascular_abnormalities
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Vitreous_touch_syndrome
Type of color vision
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Monochromacy
Swelling of the eye's optic disc due to high intracranial pressure
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Papilledema
Inability to close the eyes while sleeping
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Lagophthalmos
Advanced form of age-related macular degeneration
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Geographic_atrophy
Triangular tissue growth on the cornea
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Pterygium_(eye)
Absence of the iris, usually involving both eyes
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Aniridia
Epithelial disruption of the cornea of the eye due to trauma or infection
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Corneal_ulcer
Disorder of the human eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Phacomorphic_glaucoma
Type of eye infection
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Toxoplasmic_chorioretinitis
Malposition of the lens of the eye
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Ectopia_lentis
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Pinguecula
Medical condition from optic nerve damage
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Non-arteritic anterior ischemic optic neuropathy
Non-arteritic_anterior_ischemic_optic_neuropathy
Rare inherited eye disease
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Leber_congenital_amaurosis
Underdevelopment of the optic nerve
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Optic_nerve_hypoplasia
Medical condition
Visual impairment Anopsia Hemianopsia binasal bitemporal homonymous Quadrantanopia subjective Asthenopia Hemeralopia Photophobia Scintillating scotoma
Vogt–Koyanagi–Harada_disease
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