Amaurosis fugax

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A transient loss of vision, large risk of stroke. Distinguish from migraine

Commonly caused by transient ischaemic attacks.


Latin. Amaurosis meaning dimming. Fugax meaning fleeing, fleeting or transitory (fugax also used in proctalgia fugax).

The visual loss in amaurosis fugax is transient, painless and monocular. It may be total or partial, and lasts from a few seconds to several hours.

The causes involve interruptions in the circulation to the visual system .

Initial Management

Immediate aspirin and rapid evaluation are very desirable.


Indices of inflammation - CRP and ESR - and the usual baseline bloods.

Carotid ultrasound imaging to seek a source of emboli.

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