Parasitic Ulcer Treatment Trial

Inclusion Criteria: * AK on at least one of the following: culture, smear, PCR, shotgun sequencing, biopsy, or confocal microscopy * Ocular inflammation after 1 month of anti-amoebic treatment, defined as conjunctival, corneal, episcleral, or anterior chamber inflammation Exclusion Criteria: * Evidence or history of interstitial keratitis * Known herpetic keratitis, as determined from history, exam, or microbiological testing * Known fungal keratitis, as demonstrated from corneal scrapings * Corneal perforation or impending corneal perforation * Prior therapeutic keratoplasty for acanthamoeba keratitis * Unwillingness or inability to follow-up * No light perception in the affected eye * Known hypertensive response to steroids * Corticosteroid allergy * Concurrent treatment with systemic corticosteroids * Concurrent granulomatous amoebic encephalitis