What is the pathophysiology of adult blepharitis?

Updated: Jan 03, 2019
  • Author: R Scott Lowery, MD; Chief Editor: Andrew A Dahl, MD, FACS  more...
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Answer

The pathophysiology of blepharitis frequently involves bacterial colonization of the eyelids. This results in direct microbial invasion of tissues, immune system–mediated damage, or damage caused by the production of bacterial toxins, waste products, and enzymes. Colonization of the lid margin is increased in the presence of seborrheic dermatitis or meibomian gland dysfunction.


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