Subperiosteal Abscess

Bilateral ethmoidal sinusitis with subperiosteal abscess of the left medial wall.

amaurosis fugax

Amaurosis fugax (Latin fugax meaning fleeting, Greek amaurosis meaning darkening, dark, or obscure) is a transient monocular visual loss.

The experience of amaurosis fugax is classically described as a transient monocular vision loss that appears as a "curtain coming down vertically into the field of vision in one eye;" however, this altitudinal visual loss is relatively uncommon. In one study, only 23.8 percent of patients with transient monocular vision loss experienced the classic "curtain" or "shade" descending over their vision.^[43]

Other descriptions of this experience include a monocular blindness, dimming, fogging, or blurring.^[44] Total or sectorial vision loss typically lasts only a few seconds, but may last minutes or even hours. Duration depends on the etiology of the vision loss. Obscured vision due to papilledema may last only seconds, while a severely atherosclerotic carotid artery may be associated with a duration of one to ten minutes.^[45] Certainly, additional symptoms may be present with the amaurosis fugax, and those findings will depend on the etiology of the transient monocular vision loss.

MANY CAUSES OF AMAUROSIS FUGAX

Cell and Flare

Cell and Flare

Physical exam finding often associated with acute iritis