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Orbit anatomy. . Frontal. Zygoma. Maxillary. Nasal. Ethmoid. Lacrimal. Sphenoid. Orbital Cellulitis. Orbital cellulitis is a dangerous infection with potentially serious complicationsIt is usually caused by a bacterial infection from the sinuses (mainly ethmoid, accounting for more than 90% of all cases) Other causes :a stye on the eyelid, recent trauma to the eyelid including bug bites, or a foreign object .
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