[Phlyctenular keratoconjunctivitis in bacterial epibulbar infections].

Phlyctenular keratoconjunctivitis is now a rare clinical entity. Histologic staging has been updated by infection-immunological findings: phlyctenules have been identified as delayed-type cellmediated immune responses involving bacterial, mycobacterial, chlamydial, fungal or parasitic pathogens. Establishment of a correct diagnosis should include conjunctival and systemic work-ups for pathogenic agents. Case reports of three patients are presented.