Infectious conjunctivitis

Last author update: 1 October 2014
Last staff update: 24 December 2020

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PubMed Search: Infectious conjunctivitis [title]

Deepali Jain, M.D.
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Cite this page: Jain D. Infectious conjunctivitis. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/eyeconjinfectious.html. Accessed September 28th, 2023.
Definition / general
  • In children, bacterial conjunctivitis is more common than viral
  • Viral conjunctivitis is highly contagious
  • Bulbar and palpebral conjunctiva
Clinical features
  • Bacterial: itching, tearing, redness, purulent discharge, matting of eyelids
  • Viral: irritation, photophobia, watery discharge
Case reports
Clinical images

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Adenovirus: various images

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Molluscum contagiosum

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Trachoma with follicles

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Trachoma with intense inflammation

Microscopic (histologic) description
  • Neutrophils on Gram stain if bacterial; lymphocytes in viral conjunctivitis
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