title: Rate of hypotony following 25-gauge pars plana vitrectomy.
abstract: OBJECTIVE
  To report the rates of hypotony after 25-gauge vitrectomy.
  
  
  METHODS
  A retrospective review of 111 consecutive cases was performed in patients undergoing transconjunctival 25-gauge pars plans vitrectomy with either air or gas as a tamponade agent. The primary outcome measure was postoperative intraocular pressure less than 5 mm Hg. A Wilcoxon rank-sum test was conducted to determine the statistical significance of continuous variables in association with rates of hypotony.
  
  
  RESULTS
  The overall incidence of hypotony on postoperative day 1 was found to be 8.1%. The rate of hypotony was 16.7% in uveitis cases and 0% in routine macular surgery. The rate of hypotony in cases in which sutures were used was 41.7%, compared to 4% in cases in which sutures were not used (P = .001).
  
  
  CONCLUSIONS
  Hypotony rates were significantly higher after 25-gauge transconjunctival pars plana vitrectomy in uveitis and some other conditions.
authors: Case Western Reserve University, Cleveland, Ohio, USA.
authors: Naina
authors: N
authors: Gupta
authors: Omar S
authors: OS
authors: Punjabi
authors: Nathan C
authors: NC
authors: Steinle
authors: Rishi P
authors: RP
authors: Singh
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D058450:Endotamponade; D005260:Female; D005466:Fluorocarbons / Q000008:administration & dosage; D006801:Humans; D007022:Hypotension / Q000453:epidemiology / Q000209:etiology*; D015994:Incidence; D007429:Intraocular Pressure; D008297:Male; D008866:Microsurgery; D008875:Middle Aged; D011183:Postoperative Complications; D012164:Retinal Diseases / Q000601:surgery; D012189:Retrospective Studies; D012307:Risk Factors; D013459:Sulfur Hexafluoride / Q000008:administration & dosage; D014065:Tonometry, Ocular; D014605:Uveitis / Q000601:surgery; D014792:Visual Acuity / Q000502:physiology; D014821:Vitrectomy
chemical_list: D005466:Fluorocarbons; C042852:perflutren; D013459:Sulfur Hexafluoride