amaurosis fugax


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amaurosis

 [am″aw-ro´sis]
loss of sight without apparent lesion of the eye, as from disease of the optic nerve, spine, or brain.
amaurosis conge´nita (amaurosis congenita of Leber) (congenital amaurosis) hereditary blindness occurring at or shortly after birth, associated with an atypical form of diffuse pigmentation and commonly with optic atrophy and attenuation of the retinal vessels.
amaurosis fu´gax sudden temporary or fleeting blindness.
Leber's congenital amaurosis amaurosis congenita.

am·au·ro·sis fu·'gax

a transient blindness that may result from a transient ischemia resulting from carotid artery insufficiency or retinal artery embolus, or to centrifugal force (visual blackout in flight).

amaurosis fugax

Transient retinal ischemia, see there.

am·au·ro·sis fu·gax

(am'aw-rō'sis fū'gaks)
Transient blindness that may result from carotid artery insufficiency, retinal artery embolus, or centrifugal force (visual blackout in flight).

amaurosis fugax

Transient loss of vision, usually for a few seconds or minutes caused by interference to the blood supply to parts of the brain or eye by tiny EMBOLI or by spasm of the arteries supplying the eye. Repeated attacks can damage the RETINA and the condition is a warning of the grave danger of STROKE. Amaurosis fugax is a form of TRANSIENT ISCHAEMIC ATTACK.

amaurosis fugax 

Transient unilateral loss of vision. The visual loss varies from partial to total blindness and rarely lasts longer than 10 minutes. It is usually caused by a temporary occlusion in the internal carotid artery, which produces an insufficient blood flow to the ophthalmic artery and may lead to closure of the central retinal artery. Syn. blackout. See fluorescein angiography; temporal arteritis; blackout; bruit; Hollenhorst's plaques; retinal arterial occlusion.
References in periodicals archive ?
The symptom of amaurosis fugax without positive abnormalities could be interpreted as a complication of anemia or postural hypotension.
Common indications for requesting this test include: (a) suspected transient ischemic attack (TIA), Co) reversible ischemic neurologic deficit (RIND), (c) CVA, (d) asymptomatic carotid bruit, or (e) amaurosis fugax.
History of stroke: includes stroke either by history or diagnosis by another medical practitioner, TIA or amaurosis fugax.
The manifestations of GCA include headache in 90% of cases, polymyalgia rheumatica (34%), jaw claudication (50%), amaurosis fugax, and blurred vision (40%).
Chen, "Correlation analysis on retrobulbar vascular hemodynamic characteristics and carotid artery color Doppler ultrasonographic features of amaurosis fugax," Zhonghua Yan Ke Za Zhi Chinese Journal of Ophthalmology, vol.
However, in the setting of evolving vision loss or amaurosis fugax, intravenous methylprednisolone, 500 mg to 1 g daily for 3 days followed by oral prednisone, should be used.
The reasons for examination were varied: 42% had symptoms of transient ischemic attacks, 36% had symptoms of stroke, and 22% had symptoms of amaurosis fugax. The authors did not describe how these patients were referred.
Patients experiencing a TIA of the anterior circulation may describe transient monocular blindness (amaurosis fugax), weakness or numbness of the contralateral limb, changes in cognitive or behavioral patterns, and/or language deficits.
For amaurosis fugax, the risk is 17% at 2 years versus 43% for transient hemispheric attacks.[12] There is a linear increase in stroke rate as the degree of angiographic stenosis increases.
Hemispheric neurological symptoms, amaurosis fugax, and Hollenhorst plaques detected in ophthalmologic examination are findings that require imaging in the diagnosis of CAS.
The patient usually presents with sudden painless loss of vision, with prior history of amaurosis fugax ranging from few minutes to few hours may be present.