title: Superficial, nonhealing corneal ulcers in horses: 23 cases (1989-2003).
abstract: OBJECTIVE
  To characterize superficial, nonhealing corneal ulcers in the horse and to assess the affect of age, breed, sex, inciting cause of the ulcer, and treatment on healing time of these ulcers.
  
  
  METHODS
  Retrospective study.
  
  
  METHODS
  Twenty-three horses with superficial, nonhealing corneal ulcerations.
  
  
  METHODS
  Medical records from 1989 to 2003 of horses diagnosed with superficial, nonhealing corneal ulcers were reviewed. Signalment, duration of clinical signs, ophthalmic abnormalities, treatment and response to treatment were recorded. Horses were treated, in addition to medical therapy, using debridement, debridement and grid keratotomy, superficial keratectomy, and superficial keratectomy with conjunctival graft placement.
  
  
  RESULTS
  Mean age +/- SD of horses was 13.7 +/- 5.8 years. The mean time of presence of the corneal ulceration was 38.9 +/- 21.3 days. Mean time to complete re-epithelialization of the corneal ulcers after treatment was 20 +/- 14.7 days. Horses treated with debridement alone, grid keratotomy and superficial keratectomy healed in a mean time of 15.3 +/- 14.6 days, 16 +/- 12.6 days, and 22.8 +/- 6.7 days, respectively.
  
  
  CONCLUSIONS
  Horses treated with a single debridement at initial evaluation healed in a significantly shorter time period than horses treated with grid keratotomy or superficial keratectomy. The latter two procedures may be beneficial in the treatment of nonhealing ulceration in horses, but the results of this study suggest that these procedures should only be performed following failure of the ulcer to heal after epithelial debridement.
authors.affiliation: Department of Clinical Sciences, North Carolina State University College of Veterinary Medicine, 4700 Hillsborough Street, Raleigh, NC 27606, USA.
authors.forename: T M
authors.initials: TM
authors.lastname: Michau
authors.forename: B
authors.initials: B
authors.lastname: Schwabenton
authors.forename: M G
authors.initials: MG
authors.lastname: Davidson
authors.forename: B C
authors.initials: BC
authors.lastname: Gilger
mesh_terms: D000818:Animals; D003320:Corneal Ulcer / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D006736:Horses; D008297:Male; D009657:North Carolina / Q000453:epidemiology; D013508:Ophthalmologic Surgical Procedures / Q000379:methods / Q000662:veterinary; D011996:Records / Q000662:veterinary; D012189:Retrospective Studies; D013522:Surgery, Veterinary / Q000379:methods; D014945:Wound Healing