Quadrantanopia: Difference between revisions
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{{Infobox medical condition | |||
| name = Quadrantanopia | |||
| image = [[File:Right-superior-quadrantanopia.svg|250px]] | |||
| caption = Visual field loss in right superior quadrant | |||
| field = [[Ophthalmology]], [[Neurology]] | |||
| symptoms = Loss of vision in a quarter section of the visual field | |||
| causes = [[Stroke]], [[brain tumor]], [[traumatic brain injury]], [[multiple sclerosis]] | |||
| diagnosis = [[Visual field test]], [[MRI]], [[CT scan]] | |||
| treatment = Depends on underlying cause; may include [[vision therapy]], [[occupational therapy]] | |||
| prognosis = Varies depending on cause and extent of brain damage | |||
| frequency = Varies; more common in individuals with neurological conditions | |||
}} | |||
[[File:Paris as seen with left homonymous hemianopsia.png|Paris as seen with Left Homonymous Hemianopsia|thumb|left]] | |||
'''Quadrantanopia''' is a type of [[visual field loss]] that occurs in one quarter of the [[visual field]]. It is often caused by [[brain damage]], specifically to the [[retina]] or [[optic nerve]]. Quadrantanopia can be classified as either [[homonymous quadrantanopia]] or [[heteronymous quadrantanopia]], depending on whether the visual field loss is on the same side or different sides in both eyes. | '''Quadrantanopia''' is a type of [[visual field loss]] that occurs in one quarter of the [[visual field]]. It is often caused by [[brain damage]], specifically to the [[retina]] or [[optic nerve]]. Quadrantanopia can be classified as either [[homonymous quadrantanopia]] or [[heteronymous quadrantanopia]], depending on whether the visual field loss is on the same side or different sides in both eyes. | ||
== Causes == | == Causes == | ||
Quadrantanopia is typically caused by damage to the [[visual pathway]], which includes the retina, optic nerve, [[optic chiasm]], [[optic tract]], [[lateral geniculate nucleus]], [[optic radiation]], and [[visual cortex]]. The specific location of the damage determines the type and location of the quadrantanopia. For example, damage to the optic radiation in the [[temporal lobe]] results in [[superior quadrantanopia]], while damage in the [[parietal lobe]] results in [[inferior quadrantanopia]]. | Quadrantanopia is typically caused by damage to the [[visual pathway]], which includes the retina, optic nerve, [[optic chiasm]], [[optic tract]], [[lateral geniculate nucleus]], [[optic radiation]], and [[visual cortex]]. The specific location of the damage determines the type and location of the quadrantanopia. For example, damage to the optic radiation in the [[temporal lobe]] results in [[superior quadrantanopia]], while damage in the [[parietal lobe]] results in [[inferior quadrantanopia]]. | ||
== Diagnosis == | == Diagnosis == | ||
Diagnosis of quadrantanopia is usually made through a [[visual field test]], which can identify areas of visual field loss. Other tests may include [[MRI]] or [[CT scan]] to identify any damage to the brain or visual pathway. | Diagnosis of quadrantanopia is usually made through a [[visual field test]], which can identify areas of visual field loss. Other tests may include [[MRI]] or [[CT scan]] to identify any damage to the brain or visual pathway. | ||
== Treatment == | == Treatment == | ||
Treatment for quadrantanopia is usually aimed at addressing the underlying cause of the condition. This may include [[surgery]], [[medication]], or [[rehabilitation therapy]] to help improve visual function. | Treatment for quadrantanopia is usually aimed at addressing the underlying cause of the condition. This may include [[surgery]], [[medication]], or [[rehabilitation therapy]] to help improve visual function. | ||
== See also == | == See also == | ||
* [[Hemianopsia]] | * [[Hemianopsia]] | ||
* [[Scotoma]] | * [[Scotoma]] | ||
* [[Blind spot]] | * [[Blind spot]] | ||
[[Category:Visual disturbances and blindness]] | [[Category:Visual disturbances and blindness]] | ||
[[Category:Symptoms and signs: Nervous and musculoskeletal systems]] | [[Category:Symptoms and signs: Nervous and musculoskeletal systems]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 05:19, 9 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
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| Quadrantanopia | |
|---|---|
| |
| Synonyms | N/A |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Loss of vision in a quarter section of the visual field |
| Complications | N/A |
| Onset | N/A |
| Duration | N/A |
| Types | N/A |
| Causes | Stroke, brain tumor, traumatic brain injury, multiple sclerosis |
| Risks | N/A |
| Diagnosis | Visual field test, MRI, CT scan |
| Differential diagnosis | N/A |
| Prevention | N/A |
| Treatment | Depends on underlying cause; may include vision therapy, occupational therapy |
| Medication | N/A |
| Prognosis | Varies depending on cause and extent of brain damage |
| Frequency | Varies; more common in individuals with neurological conditions |
| Deaths | N/A |
Quadrantanopia is a type of visual field loss that occurs in one quarter of the visual field. It is often caused by brain damage, specifically to the retina or optic nerve. Quadrantanopia can be classified as either homonymous quadrantanopia or heteronymous quadrantanopia, depending on whether the visual field loss is on the same side or different sides in both eyes.
Causes[edit]
Quadrantanopia is typically caused by damage to the visual pathway, which includes the retina, optic nerve, optic chiasm, optic tract, lateral geniculate nucleus, optic radiation, and visual cortex. The specific location of the damage determines the type and location of the quadrantanopia. For example, damage to the optic radiation in the temporal lobe results in superior quadrantanopia, while damage in the parietal lobe results in inferior quadrantanopia.
Diagnosis[edit]
Diagnosis of quadrantanopia is usually made through a visual field test, which can identify areas of visual field loss. Other tests may include MRI or CT scan to identify any damage to the brain or visual pathway.
Treatment[edit]
Treatment for quadrantanopia is usually aimed at addressing the underlying cause of the condition. This may include surgery, medication, or rehabilitation therapy to help improve visual function.
