Bacterial Conjunctivitis (Pink Eye) Differential Diagnoses

Updated: Aug 17, 2024
  • Author: Karen K Yeung, OD, FAAO; Chief Editor: Andrew A Dahl, MD, FACS  more...
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DDx

Diagnostic Considerations

Medicolegal concerns do arise in connection with bacterial conjunctivitis. As with all medical practice, careful discussion and documentation is paramount. A few general guidelines are helpful, as follows:

  • Know the differential diagnosis.
  • Perform an eye examination and, in particular, document that keratitis, iritis, and acute glaucoma have been ruled out.
  • Always document the best corrected visual acuity in each eye.
  • Ascertain the absence of glaucoma on every visit or the inability to safely do so. A simple ballpark bidigital applanation of each globe through the closed upper lid provides a useful and legally protective assessment of intraocular pressure (IOP). This assessment can be performed in immediate proximity to the digital assessment for preauricular lymphadenopathy, accompanied by thorough physician handwashing thereafter.
  • Be aware of more unusual conditions, such as carotid-cavernous fistula.
  • Always consider Chlamydia or N gonorrhoeae in the differential diagnosis. Be sure to treat systemically and ask for advice from other specialists when needed.

Given the increasing popularity of telemedicine and the increased quality of phone camera capabilities, many more patients are being diagnosed and treated via telemedicine. [26]  With a good health history and quality images, simple and straightforward conjunctivitis not involving the cornea may be treated remotely, though caution should be taken not to overprescribe antibiotics. Cases of conjunctivitis that do not resolve quickly or that are deemed more complicated should be referred to be seen by an eye care professional immediately.

See the following for more information:

Differential Diagnoses