Amaurosis fugax causes: Difference between revisions

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Line 38: Line 38:
*[[Central retinal vein occlusion]]
*[[Central retinal vein occlusion]]


*Cerebral [[transient ischemic attacks]] (TIAs)
*Cerebral [[transient ischemic attacks]] (TIAs)<ref name="pmid4083852">{{cite journal |author=Hurwitz BJ, Heyman A, Wilkinson WE, Haynes CS, Utley CM |title=Comparison of amaurosis fugax and transient cerebral ischemia: a prospective clinical and arteriographic study |journal=Ann. Neurol. |volume=18 |issue=6 |pages=698–704 |year=1985 |month=December |pmid=4083852 |doi=10.1002/ana.410180612 |url=}}</ref>


*Chiasm compression
*Chiasm compression
Line 62: Line 62:
*[[Fatigue]]
*[[Fatigue]]


*[[Giant cell arteritis]]
*[[Giant cell arteritis]]<ref name="pmid9559737">{{cite journal |author=Hayreh SS, Podhajsky PA, Zimmerman B |title=Ocular manifestations of giant cell arteritis |journal=Am. J. Ophthalmol. |volume=125 |issue=4 |pages=509–20 |year=1998 |month=April |pmid=9559737 |doi= |url=}}</ref><ref name="pmid9559738">{{cite journal |author=Hayreh SS, Podhajsky PA, Zimmerman B |title=Occult giant cell arteritis: ocular manifestations |journal=Am. J. Ophthalmol. |volume=125 |issue=4 |pages=521–6 |year=1998 |month=April |pmid=9559738 |doi= |url=}}</ref>


*[[Glaucoma]]
*[[Glaucoma]]
Line 113: Line 113:
*[[Optic neuritis]]
*[[Optic neuritis]]


*[[Orthostatic hypotension]]
*[[Orthostatic hypotension]]<ref name="pmid2261177">{{cite journal |author=Lord RS |title=Transient monocular blindness |journal=Aust N Z J Ophthalmol |volume=18 |issue=3 |pages=299–305 |year=1990 |month=August |pmid=2261177 |doi= |url=}}</ref>


*[[Papilledema]]
*[[Papilledema]]
Line 125: Line 125:
*Reduced cardiac output (from a [[dysrhythmia]])
*Reduced cardiac output (from a [[dysrhythmia]])


*[[Retinal artery]] occlusion (RAO)
*[[Retinal artery]] occlusion (RAO)<ref name="pmid12364725">{{cite journal |author=Mead GE, Lewis SC, Wardlaw JM, Dennis MS |title=Comparison of risk factors in patients with transient and prolonged eye and brain ischemic syndromes |journal=Stroke |volume=33 |issue=10 |pages=2383–90 |year=2002 |month=October |pmid=12364725 |doi= |url=}}</ref>


*Retinal artery [[thrombosis]]
*Retinal artery [[thrombosis]]


*Retinal [[emboli]]
*Retinal [[emboli]]<ref name="pmid16741179">{{cite journal |author=Wang JJ, Cugati S, Knudtson MD, ''et al.'' |title=Retinal arteriolar emboli and long-term mortality: pooled data analysis from two older populations |journal=Stroke |volume=37 |issue=7 |pages=1833–6 |year=2006 |month=July |pmid=16741179 |doi=10.1161/01.STR.0000226929.23297.75 |url=}}</ref>


*Retinal [[migraine]]
*Retinal [[migraine]]


*Retinal vein occlusion
*Retinal vein occlusion<ref name="pmid16439697">{{cite journal |author=Cugati S, Wang JJ, Rochtchina E, Mitchell P |title=Ten-year incidence of retinal emboli in an older population |journal=Stroke |volume=37 |issue=3 |pages=908–10 |year=2006 |month=March |pmid=16439697 |doi=10.1161/01.STR.0000204118.87477.46 |url=}}</ref>


*[[Stroke]]
*[[Stroke]]

Revision as of 19:22, 27 February 2013

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor-In-Chief: Marcelo R. Zacarkim, M.D. [2]

Overview

Amaurosis fugax is a symptom of carotid artery disease. It occurs when a piece of plaque in a carotid artery breaks off and travels to the retinal artery in the eye. The carotid arteries provide the main blood supply to the brain. They are located on each side of the neck under the jaw. Plaque is a hard substance that forms when fat, cholesterol, and other substances build up in the walls of arteries. Pieces of plaque can block blood flow. In people with amaurosis fugax, vision loss continues as long as the blood supply to the retinal artery is blocked. Atherosclerosis of the arteries in the neck is the main risk factor for this condition. Risk factors for atherosclerosis include heart disease, high cholesterol, smoking, diabetes, and high blood pressure.

Causes in Alphabetical Order

  • Blood coagulation disorders
  • Blood viscosity
  • Cardiac emboli (valve, mural thrombi, intracardiac tumor)
  • Carotid occlusive disease
  • Chiasm compression
  • Decreased blood flow (ischemia) to the retina
  • Disease susceptibility
  • Distal internal carotid artery atheroembolism
  • Extracranial arterial occlusive disease
  • Ipsilateral carotid disease
  • Irregular ulcerated lesion
  • Neurologic disorder
  • Nonvascular ophthalmic disorder
  • Obesity
  • Retinal vein occlusion[7]
  • Sudden vision changes


References

  1. Hurwitz BJ, Heyman A, Wilkinson WE, Haynes CS, Utley CM (1985). "Comparison of amaurosis fugax and transient cerebral ischemia: a prospective clinical and arteriographic study". Ann. Neurol. 18 (6): 698–704. doi:10.1002/ana.410180612. PMID 4083852. Unknown parameter |month= ignored (help)
  2. Hayreh SS, Podhajsky PA, Zimmerman B (1998). "Ocular manifestations of giant cell arteritis". Am. J. Ophthalmol. 125 (4): 509–20. PMID 9559737. Unknown parameter |month= ignored (help)
  3. Hayreh SS, Podhajsky PA, Zimmerman B (1998). "Occult giant cell arteritis: ocular manifestations". Am. J. Ophthalmol. 125 (4): 521–6. PMID 9559738. Unknown parameter |month= ignored (help)
  4. Lord RS (1990). "Transient monocular blindness". Aust N Z J Ophthalmol. 18 (3): 299–305. PMID 2261177. Unknown parameter |month= ignored (help)
  5. Mead GE, Lewis SC, Wardlaw JM, Dennis MS (2002). "Comparison of risk factors in patients with transient and prolonged eye and brain ischemic syndromes". Stroke. 33 (10): 2383–90. PMID 12364725. Unknown parameter |month= ignored (help)
  6. Wang JJ, Cugati S, Knudtson MD; et al. (2006). "Retinal arteriolar emboli and long-term mortality: pooled data analysis from two older populations". Stroke. 37 (7): 1833–6. doi:10.1161/01.STR.0000226929.23297.75. PMID 16741179. Unknown parameter |month= ignored (help)
  7. Cugati S, Wang JJ, Rochtchina E, Mitchell P (2006). "Ten-year incidence of retinal emboli in an older population". Stroke. 37 (3): 908–10. doi:10.1161/01.STR.0000204118.87477.46. PMID 16439697. Unknown parameter |month= ignored (help)