Orbital complications of acute sinusitis: evaluation, management, and outcome.

Acute orbital cellulitis is most commonly caused by sinusitis. This complication is based on the anatomy of the sinuses, orbit, and their venous connections. A series of 134 patients is reviewed to demonstrate the etiology and clinical course of orbital cellulitis. Antibiotic therapy alone does not prevent permanent complications. Surgical intervention is found necessary in all age groups and is required in 20% of the study population.