(See also Introduction to Eye Socket Disorders.)
Both preseptal cellulitis and orbital cellulitis are more common among children. Preseptal cellulitis is far more common than orbital cellulitis. However, orbital cellulitis is more dangerous.
Preseptal cellulitis usually is caused by spread of an infection of the face or eyelid, an infected insect or animal bite, conjunctivitis, a hordeolum (stye), or sinusitis.
In people with preseptal cellulitis, tissues around the eye become swollen, warm, tender, and usually red. A fever may develop. Sometimes the eyelid is so swollen that it cannot be easily opened. However, once the eyelids are opened, the vision and eye movements are not impaired, and the eyeball is not bulging.
Treatment of preseptal cellulitis consists of antibiotics taken by mouth (for example, amoxicillin with clavulanate). If people have a severe infection or cannot take pills, hospitalization is recommended and antibiotics are given by vein. People should be monitored closely by an ophthalmologist (a medical doctor who specializes in eye disorders).