title: Surgical outcome of pars plana vitrectomy: a retrospective study in a peripheral tertiary eye care centre of Nepal.
abstract: BACKGROUND
  Trans-pars plana vitrectomy (TPPV) is an effective surgical procedure to retain the useful vision in vitreoretinal diseases.
  
  
  OBJECTIVE
  To evaluate the surgical outcome of pars plana vitreoretinal surgery.
  
  
  METHODS
  Retrospective non-comparative interventional case series.
  
  
  METHODS
  A hospital-based retrospective interventional study of series of cases was carried out in retina clinic of Lumbini Eye Institute, Nepal, over a period of one-and-a-half years. Records of 64 patients who underwent vitreo-retina surgeries were reviewed. Demography, duration of symptoms, risk factors and indications, preoperative and post-operative visual acuity, intra-operative and post-operative complications were analyzed.
  
  
  METHODS
  The parameters studied were post-operative visual acuity and complications.
  
  
  RESULTS
  Of 64 patients, 61% presented 2 months after the onset of symptoms. Preoperatively, 65.5% had visual acuity of hand motions to 3/60 followed by perception of light only in 26.6%. The main indication for TPPV was vitreous haemorrhage (VH), in 53%. The visual acuity improved to better than 6/60 in patients with VH (68%), whereas, overall, in 72% of the subjects, it improved by 2 lines postoperatively. The commonest intra-operative complications were iatrogenic retinal break (5, 7.8%) at the sclerostomy site.
  
  
  CONCLUSIONS
  The main indication for TPPV is vitreous haemorrhage. Useful vision can be restored by pars plana vitrectomy in the majority of the patients. Retinal break is the commonest complication of TPPV.
authors.affiliation: Nepal Eye Hospital, National Academy of Medical Sciences, Kathmandu. ssubedi63@rediffmail.com
authors.forename: S
authors.initials: S
authors.lastname: Subedi
authors.forename: M K
authors.initials: MK
authors.lastname: Sharma
authors.forename: B R
authors.initials: BR
authors.lastname: Sharma
authors.forename: I
authors.initials: I
authors.lastname: Kansakar
authors.forename: K
authors.initials: K
authors.lastname: Dhakwa
authors.forename: R K
authors.initials: RK
authors.lastname: Adhikari
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006782:Hospitals, Special; D006801:Humans; D008297:Male; D008875:Middle Aged; D009390:Nepal; D012167:Retinal Perforations / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity; D014821:Vitrectomy / Q000379:methods*; D014823:Vitreous Hemorrhage / Q000601:surgery*; D055815:Young Adult