What are the risk factors and prevalence of a bacterial etiology for conjunctivitis (pink eye)?

Updated: Jan 03, 2019
  • Author: Karen K Yeung, OD, FAAO; Chief Editor: Andrew A Dahl, MD, FACS  more...
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Only about 30% of primary care patients with infectious conjunctivitis are confirmed to have bacterial conjunctivitis, although 80% are treated with antibiotics. [3] The bacterial etiology often depends on geography and age, but the most common include Staphylococcus, Streptococcus, Corynebacterium, Haemophilus, Pseudomonas, and Moraxella species.

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