title: Preoperative findings and visual outcome associated with retinal reattachment surgery in dogs: 217 cases (275 eyes).
abstract: OBJECTIVE
  Report the correlation of pre-operative findings with visual outcome in dogs undergoing retinal reattachment surgery for giant retinal tears.
  
  
  METHODS
  Retrospective analysis of dogs that underwent pars plana vitrectomy (PPV) with silicone oil (SiO) tamponade and endolaser retinopexy at one institution. Recorded parameters included signalment, etiology, and duration of retinal detachment, observable retinal tissue architecture, visual reflexes, lens status, presurgical aqueous flare, visual status postoperatively, and complications.
  
  
  RESULTS
  Two hundred and seventeen patients (275 eyes) were included. Common etiologies of detachment were primary vitreoretinal disease (50.5%), lens surgery (35.3%), and hypermature cataracts (6.2%). Immediate postoperative anatomic success was noted in 98% of operated eyes. Maintenance or return of vision was noted in 74.2% of patients (72% of eyes) through the last known follow-up, with return of vision on average 18.5 days postoperatively. In those eyes that regained vision, 71.7% had retained vision at the last known recheck examination, with an average follow-up time of 550 days. Pre-operative findings correlated with postoperative vision included presence of a dazzle reflex, presence of a menace response, and retinal tissue architecture. The most common complications included migration of SiO into the anterior chamber (49.4%), corneal ulceration (25.7%), glaucoma (25.7%), and cataract formation (24.5%).
  
  
  CONCLUSIONS
  Giant retinal tears in dogs can be successfully managed via PPV with SiO tamponade and endolaser retinopexy. Vision was maintained in the majority of cases with long-term follow-up. Patient history and thorough ophthalmic examination with attention to retinal tissue architecture are important in assessing surgical candidacy.
authors.affiliation: Animal Eye Care of Chesapeake, Chesapeake, VA, USA.
authors.forename: Ronald A
authors.initials: RA
authors.lastname: Spatola
authors.affiliation: Animal Eye Care of Chesapeake, Chesapeake, VA, USA.
authors.forename: Brad
authors.initials: B
authors.lastname: Nadelstein
authors.affiliation: Animal Eye Care of Chesapeake, Chesapeake, VA, USA.
authors.forename: Andrea C
authors.initials: AC
authors.lastname: Leber
authors.affiliation: Animal Eye Care of Chesapeake, Chesapeake, VA, USA.
authors.forename: Andrew
authors.initials: A
authors.lastname: Berdoulay
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000473:pathology / Q000601:surgery*; D004285:Dogs; D005260:Female; D005654:Fundus Oculi; D053685:Laser Therapy / Q000662:veterinary; D008297:Male; D012160:Retina / Q000473:pathology / Q000601:surgery*; D012167:Retinal Perforations / Q000601:surgery / Q000662:veterinary*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014785:Vision, Ocular; D014821:Vitrectomy / Q000662:veterinary
keywords: giant retinal tear; pars plana vitrectomy; retinal detachment; silicone oil; visual outcome