title: Sterile Keratitis following Collagen Crosslinking.
abstract: OBJECTIVE
  To report a keratoconic eye that developed severe sterile keratitis and corneal scar after collagen crosslinking necessitating corneal transplantation.
  
  
  METHODS
  A 26-year-old man with progressive keratoconus underwent collagen crosslinking and presented with severe keratitis 72 hours after the procedure. The initial impression was infectious corneal ulcer and a fortified antibiotic regimen was administered. However, the clinical course and confocal microscopy results prompted a diagnosis of sterile keratitis. The eye developed severe corneal scars leading to reduced visual acuity and necessitating corneal transplantation.
  
  
  CONCLUSIONS
  Sterile keratitis may develop after collagen crosslinking resulting in profound visual loss leading to corneal transplantation.
authors.affiliation: Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad-Ali
authors.initials: MA
authors.lastname: Javadi
authors.affiliation: Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Sepehr
authors.initials: S
authors.lastname: Feizi
keywords: Collagen Crosslinking; Keratoconus; Sterile Keratitis