title: Anatomical success rate of pars plana vitrectomy for treatment of complex rhegmatogenous retinal detachment.
abstract: BACKGROUND
  Pars plana vitrectomy (PPV) is preferred surgical procedure for the management of complex rhegmatogenous retinal detachment (RRD). The purpose of this study was to evaluate the anatomical results of primary PPV for the treatment of primary complex RRD and to determine the influence of lens status, tamponading agent, preoperative proliferative vitreoretinopathy (PVR) and axial length (AL) of the eye upon the anatomical outcome.
  
  
  METHODS
  A retrospective consecutive chart analysis was performed on 117 eyes from 117 patients with complex RRD managed with PPV. Fifty-nine eyes were phakic and 58 pseudophakic eyes. All patients had a minimum follow-up period of 12 months. Eyes were classified into groups using independent variables (first classification based upon lens status and tamponade used, second classification based upon lens and PVR status and third classification based upon AL of the eye). The groups were compared for anatomical outcomes (dependent variables) using nonparametric- or, in case of normally distributed data, parametric- statistical tests.
  
  
  RESULTS
  Retinal reattachment rate in phakic eyes was 94.9% compared to 93.1% in pseudophakic, with no statistically significant difference between the two. The overall retinal reattachment rate with single surgery was 94.0%. Final reattachment rate was 97.4%. In case of established PVR ≥ C1, the reattachment rate was not statistically different (92.6%) from eyes with no PVR (91.1%) irrespective of lens status. A statistically significant difference was found between redetachment rates only between phakic eyes with gas tamponade compared to silicon oil (SO) (p = 0.001). Reattachment rate proved to be similar in both AL groups (≤24 mm and > 24 mm).
  
  
  CONCLUSIONS
  High anatomical success rate of primary vitrectomy for complex RRD with either gas or SO tamponade was achieved in phakic as well as pseudophakic eyes irrespective of AL of the eye.
authors.affiliation: Eye Hospital, University Medical Centre Ljubljana, Grablovičeva 46, 1000, Ljubljana, Slovenia. xhlumi@hotmail.com.
authors.forename: Xhevat
authors.initials: X
authors.lastname: Lumi
authors.affiliation: Eye Hospital, University Medical Centre Ljubljana, Grablovičeva 46, 1000, Ljubljana, Slovenia.
authors.forename: Zala
authors.initials: Z
authors.lastname: Lužnik
authors.affiliation: Department of Ophthalmology, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Korányi fasor 10-11, 6720, Szeged, Hungary.|Centre of Eye Research, Department of Ophthalmology, Oslo University Hospital, University of Oslo, Oslo, Norway.
authors.forename: Goran
authors.initials: G
authors.lastname: Petrovski
authors.affiliation: Department of Public Health, Faculty of Medicine, University of Szeged, Dóm tér 10, 6720, Szeged, Hungary.|Health Services Research Centre, Akershus University Hospital, 1478 Lørenskog, Norway, Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway.
authors.forename: Beáta Éva
authors.initials: BÉ
authors.lastname: Petrovski
authors.affiliation: Eye Hospital, University Medical Centre Ljubljana, Grablovičeva 46, 1000, Ljubljana, Slovenia.
authors.forename: Marko
authors.initials: M
authors.lastname: Hawlina
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D058452:Axial Length, Eye / Q000502:physiology; D058450:Endotamponade / Q000379:methods; D005260:Female; D006801:Humans; D007908:Lens, Crystalline / Q000473:pathology; D008297:Male; D008875:Middle Aged; D019591:Pseudophakia / Q000473:pathology; D012163:Retinal Detachment / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy / Q000379:methods*; D018630:Vitreoretinopathy, Proliferative / Q000601:surgery
keywords: Axial length; Pars plana vitrectomy; Proliferative vitreoretinopathy; Pseudophakia; Rhegmatogenous retinal detachment