Infectious Disease Compendium



Redness of the conjunctiva aka pink eye.

Epidemiologic Risks

Depends on the organism.


Bacterial: S. aureus and S. pneumonia are the most common organisms in the adult; if you put your finger in your eye, any organism can be inoculated.

Viral: Epidemic keratoconjunctivitis: most commonly Adenovirus serotype 8 and others; Enterovirus 70 causes hemorrhagic conjunctivitis; as well as Coxsackievirus and Adenovirus.

Every class of organism can infect the conjunctiva so history and cultures are important.

Can also be allergic and due to chemical irritation.

Empiric Therapy

Usually an antibiotic eye drop for 10 days: quinolone and aminoglycosides both come in eye drops, which one you use makes little difference.


A few diseases that can manifest in the eye: Leptospirosis (suffusion), Tularemia, Syphilis, Bartonella (Parinauds syndrome).


Last Update: 06/11/18.