title: Serratia Marcescens corneal ulcer as a complication of orthokeratology.
abstract: OBJECTIVE
  To report a case of Serratia Marcescens corneal ulcer as a complication of orthokeratology treatment.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 9-year-old male who underwent orthokeratology treatment for 6 months suffered from a corneal ulcer. The refractive state of lesion eye was -5.5D/-1.25D x 180 degrees, and visual acuity was hand motion at 30 cm. He wore a retainer lens, rigid gas permeable lens, overnight for 2 months before the corneal ulcer occurred. Ulcer became worse after tobramycin and gentamycin treatment for 2 days. After ciprofloxacin treatment, the ulcer healed and visual acuity recovered to 20/20 with spectacle correction. Cultures of the cornea tissue and contact lens storage solution both grew Serratia Marcescens, which was sensitive to ciprofloxacin.
  
  
  CONCLUSIONS
  Overnight wearing of a rigid contact lens is a risk factor for a corneal ulcer.
authors.affiliation: Department of Ophthalmology, Veterans General Hospital, Taipei, Taiwan. khchen@vghtpe.gov.tw
authors.forename: K H
authors.initials: KH
authors.lastname: Chen
authors.forename: T M
authors.initials: TM
authors.lastname: Kuang
authors.forename: W M
authors.initials: WM
authors.lastname: Hsu
mesh_terms: D000890:Anti-Infective Agents / Q000627:therapeutic use; D001251:Astigmatism / Q000628:therapy; D002648:Child; D002939:Ciprofloxacin / Q000627:therapeutic use; D003261:Contact Lenses / Q000009:adverse effects* / Q000382:microbiology; D003315:Cornea / Q000382:microbiology; D003320:Corneal Ulcer / Q000188:drug therapy / Q000209:etiology*; D015818:Eye Infections, Bacterial / Q000188:drug therapy / Q000209:etiology*; D006801:Humans; D008297:Male; D009216:Myopia / Q000628:therapy; D012307:Risk Factors; D016868:Serratia Infections / Q000188:drug therapy / Q000209:etiology*; D012706:Serratia marcescens / Q000302:isolation & purification*; D014792:Visual Acuity
chemical_list: D000890:Anti-Infective Agents; D002939:Ciprofloxacin