- Most commonly associated with contact lens use, corneal trauma and
history of exposure to possibly contaminated fresh water.
- Clinical features:
- Symptoms:
- Foreign body sensation, severe ocular pain, photophobia
and blurred vision
- Often pain is more severe than signs in early course of
the disease
- Signs:
- Usually unilateral diffuse punctate epitheliopathy, dendritic
epithelial lesion which may gradually progress to stromal
infection associated with ring infiltrate formation
- Enlarged corneal nerve ( keratoneuritis) is patognomonic
of the infection
- Scleritis may be found in advanced cases
- Management:
- Early diagnosis a prognostic factor of a successful outcome.
- Epithelial debridement.
- Topical anti-amoeba agents.
- Penetrating keratoplasty in a severe progressive keratitis.
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