Comprehensive Ophthalmology, Cornea/External Disease, Neuro-Ophthalmology/Orbit
Cellulitis anterior to the orbital septum presents as edema and erythema of the lids. The lids are often tender to the touch. The edema may be so severe that the lids are swollen shut. In cases of anterior (periorbital or preseptal) cellulitis, the visual acuity, pupils, and mobility are normal, and there is no proptosis. These cases should be treated with systemic antibiotics and warm compresses. A CT scan should be considered if there are concerns that the orbit is involved or if the condition fails to respond promptly to antibiotic therapy.