Preseptal cellulitis is an infection of the tissues surrounding the eye. It can be
the result of minor trauma to the area around the eye, or it may be the extension of
another site of infection, such as sinusitis.
There is generally redness and swelling of the eyelid and the surrounding area, but
unlike orbital cellulitis (a more extensive infection involving deeper tissue),
periorbital cellulitis does not cause protrusion of the eyeball (proptosis) or limit its
movements. Periorbital cellulitis is most common in children under six years of age.