title: Pars plana vitrectomy through the Boston Keratoprosthesis type 1.
abstract: OBJECTIVE
  To ascertain the feasibility of pars plana vitrectomy (PPV) through a permanent Boston Keratoprosthesis type 1 (KPro) without the use of a temporary KPro.
  
  
  METHODS
  A retrospective interventional case series. Eyes implanted with Boston KPro type 1 between 2008 and 2011 requiring PPV for vitreoretinal complications were included. Feasibility of PPV through the KPro, its anatomical and functional success were studied.
  
  
  RESULTS
  Five out of 70 patients required PPV for vitreoretinal complications post-KPro surgery resulting in an incidence of 7%. PPV was feasible through the Boston KPro with no deleterious effects on the corneal carrier or the KPro itself. Repeat PPV was necessary in some cases. Although anatomical repair of the vitreoretinal complications was achieved in most cases, post PPV visual acuity remained poor in the majority.
  
  
  CONCLUSIONS
  Our study suggests that although PPV through the Boston KPro is a viable approach for vitreoretinal disease repair, visual rehabilitation remains poor.
authors.affiliation: Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal, Notre-Dame Hospital, Montreal, Quebec, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Harissi-Dagher
authors.forename: G M
authors.initials: GM
authors.lastname: Durr
authors.forename: K
authors.initials: K
authors.lastname: Biernacki
authors.forename: M
authors.initials: M
authors.lastname: Sebag
authors.forename: M-A
authors.initials: MA
authors.lastname: Rhéaume
mesh_terms: D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019736:Prostheses and Implants; D019919:Prosthesis Implantation / Q000009:adverse effects; D012164:Retinal Diseases / Q000601:surgery*; D012189:Retrospective Studies; D014792:Visual Acuity; D014821:Vitrectomy / Q000379:methods*