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Clinical slit-lamp photographs of the left eye of an 18-year-old male (patient no. 12) who presented on May 06, 2013 with a corneal ulcer following trauma with a metallic foreign body (a). The ulcer had doubled 48-h later with corneal melting (b) when 1.6% colistimethate treatment was initiated. Four days later (c) there was reduction in infiltrate density and corneal melting appeared to have ceased and subsequently the ulcer healed (d) by 30 days
