Which bacteria is commonly associated with cellulitis of the eye?

Cellulitis of the eye, particularly periorbital cellulitis, is most frequently associated with Staphylococcus species. This type of cellulitis occurs when bacteria invade the soft tissues surrounding the eye and can be a result of various factors, such as skin infections, sinus infections, or even trauma. Staphylococcus aureus, in particular, is a common pathogen that can enter through breaks in the skin or impetigo lesions in the area.

While other bacteria such as Pseudomonas aeruginosa, Escherichia coli, and Neisseria gonorrhoeae can cause infections in different contexts, they are less commonly linked directly to cellulitis of the eye. Pseudomonas aeruginosa is more associated with infections in immunocompromised patients or those with contact lens-related keratitis. Escherichia coli typically does not infect the soft tissue of the face. Neisseria gonorrhoeae is more known for causing sexually transmitted infections and can lead to conjunctivitis, but it's not the primary cause of cellulitis around the eye. Thus, the association of Staphylococcus species with this specific condition makes it the correct choice.