title: Keratoprosthesis with retrocorneal fixation: preliminary results in dogs with corneal blindness.
abstract: OBJECTIVE
  To evaluate the use and complications of a penetrating keratoprosthesis implantation in the management of corneal opacification in dogs.
  
  
  METHODS
  A retrospective clinical study describes the indications for the surgical technique utilized and the outcomes of this procedure in 20 eyes of 19 dogs with blindness of corneal origin. A successful surgical outcome was defined as a clear keratoprosthesis optic and improvement or restoration of functional vision over a follow-up period ranging from at least 8 months to a maximum of 7 years.
  
  
  RESULTS
  Eyes with total corneal opacification resulting from chronic superficial keratitis (n = 11), keratoconjunctivitis sicca (n = 5), endothelial dystrophy (n = 3) and chemical burn (n = 1) were treated by unilateral (n = 18) or bilateral (n = 1) full-thickness implantation of a keratoprosthesis. Keratoprostheses were retained in 15 eyes (75%) which regained vision to the date of reporting. Among these eyes, six had uncomplicated postoperative course, five developed retroprosthetic membranes and four developed granulation tissue over the optic of the keratoprostheses. These complications were successfully removed surgically in the nine eyes. The five remaining eyes (25%) developed serious early postoperative complications, for which enucleation had to be performed.
  
  
  CONCLUSIONS
  In keratopathies in which the corneal opacification could not be treated by standard medical or surgical procedures, this keratoprosthesis appears to be promising to restore vision in chronic superficial keratitis and deep corneal dystrophy. It appears to have a poor prognosis in keratoconjunctivitis sicca in brachycephalic dogs. The post operative complications retro-prosthetic membranes and granulomatous overgrowth could be treated well.
authors.affiliation: Centre Hospitalier Vétérinaire, 275 Route Impériale, 74370 Saint-Martin Bellevue, France. ophtalmologie@chvsm.com
authors.forename: Pierre-François
authors.initials: PF
authors.lastname: Isard
authors.forename: Thomas
authors.initials: T
authors.lastname: Dulaurent
authors.forename: Alain
authors.initials: A
authors.lastname: Regnier
mesh_terms: D000818:Animals; D001766:Blindness / Q000601:surgery / Q000662:veterinary*; D003316:Corneal Diseases / Q000601:surgery / Q000662:veterinary*; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D005260:Female; D008297:Male; D019736:Prostheses and Implants / Q000662:veterinary*; D012189:Retrospective Studies