What causes canaliculitis?

Updated: Jul 31, 2018
  • Author: Bobak Zonnoor , MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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Canaliculitis is caused by infection of the canaliculi; often, it is chronic. The disorder may also be iatrogenic, occurring after the use of instrumentation or the placement of silicone plugs in the treatment of dry eyes. [38]

It is classically taught that the most common pathogens of canaliculitis are Actinomyces israelii and Nocardia (formerly known as Streptothrix) species. [5, 39]

Case reviews, however, have shown mixed flora associated with infection. Species isolated include Staphylococcus species, Escherichia coli, Haemophilus species, Pseudomonas aeruginosa, Klebsiella oxytocia, [40] Arcanobacterium (previously Corynebacterium) haemolyticum, [41] and M chelonae. [42]

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