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Amaurosis fugax

**{{{Name|Amaurosis fugax}}}**
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ICD-10	G45.3
ICD-O:	{{{ICDO}}}
ICD-9	362.34
OMIM	}}}
MedlinePlus	}}}
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Amaurosis fugax (Greek: fugax meaning fugitive, amaurosis meaning darkening, dark, or obscure) is a painless, temporary loss of visionin one eyecaused by decreased blood flow(ischemia) to the retina. It is a type of transient ischaemic attack(TIA). The lack of blood flow can be caused by emboli(moving clots) obstructing blood flow in the retinal arteryor ophthalmic artery. The most common causes are a clot of plaqueor a blood clotfrom a stenosedcarotid artery, other sources are heartor heart valvesand arterial spasm. Vision loss lasts for the period of time the clot obstructs blood flow.

The experience of amaurosis fugax is often described as a "curtaincoming down vertically into the field of visionin one eye". Partial or complete vision losstypically lasts only a few seconds but may last minutes or even hours.

Management

Despite the temporary nature of the blindness, those experiencing amaurosis fugax are usually advised to consult a physicianimmediately as it is a symptomthat usually indicates the presence of serious vascular events, including stroke.

External links

Sudden Vision Loss - E-Medicine

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Categories: Cardiovascular diseases| Ophthalmology| Neurology| Medical sign stubs

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Amaurosis+fugax Wikipedia article Amaurosis fugax.

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