This document discusses preseptal and orbital cellulitis, infections of the eyelid and orbit. Preseptal cellulitis involves the eyelid while orbital cellulitis spreads to the orbit. Risk factors include sinus infections, injuries, and nearby skin or dental infections. Clinical signs are fever, eye pain, swelling, and reduced vision for orbital cellulitis. Diagnosis involves visual exams, imaging, and labs. Treatment is prompt IV antibiotics tailored to lab results, with surgery for abscesses or vision threats.