If any of these features is present, one must assume that the patient has orbital cellulitis and begin treatment with IV antibiotics.

Affected individuals may experience: swelling, redness, discharge, pain, shut eye, conjunctival infection, fever (mild), slightly blurred vision, teary eyes, and some reduction in vision.

Typical signs include periorbital erythema, induration, tenderness and warmth.

[2] Staphylococcus aureus, Streptococcus pneumoniae, other streptococci, and anaerobes are the most common causes, depending on the origin of the infection.

There is inadequate evidence to draw conclusions about the adjunctive corticosteroid therapy in the treatment of periorbital cellulitis.