title: A comparison of Nd:YAG capsulotomy rate in two different intraocular lenses: AcrySof and Stabibag.
abstract: OBJECTIVE
  To evaluate the incidence of posterior capsule opacification after implantation of two different intraocular lenses (IOLs), AcrySof and Stabibag, by comparing the neodymium:YAG (Nd:YAG) laser capsulotomy rates.
  
  
  METHODS
  The medical records of 596 patients (705 eyes) who underwent phacoemulsification and posterior chamber IOL implantation using either AcrySof (n = 335) or Stabibag (n = 370) IOLs during a 1-year (1999) period were reviewed. Eyes with secondary cataract, combined procedures or operative complications, such as capsule tears, were excluded from the study. The subjects' age, sex, surgeon (two surgeons), and time for Nd:YAG laser capsulotomy were recorded.
  
  
  RESULTS
  The mean follow-up was 23 months in both IOL groups. There were no statistically significant differences within the two IOL groups regarding sex distribution or surgeon. The mean age in the AcrySof group was 77.0 years compared to 79.2 years in the Stabibag group (p = 0.001). Nd:YAG laser capsulotomy was performed in 7.6% of patients in the Stabibag group compared to 2.7% in the AcrySof group (i.e. at a significantly higher rate) (p = 0.004). Survival analyses demonstrated that age and type of IOL were the only independent predictors of the incidence of capsulotomy.
  
  
  CONCLUSIONS
  This study shows that the frequency of eyes with posterior capsule opacification needing capsulotomy was significantly higher in eyes with Stabibag IOLs compared to eyes with AcrySof IOLs.
authors.affiliation: Department of Ophthalmology, Sykehuset Vestfold HF, Half.Wilhelmsens alle 17, 3116 Tønsberg, Norway. per.bjorn.stordahl@siv.no
authors.forename: Per Bjørn
authors.initials: PB
authors.lastname: Stordahl
authors.forename: Liv
authors.initials: L
authors.lastname: Drolsum
mesh_terms: D000180:Acrylic Resins; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001672:Biocompatible Materials; D002386:Cataract / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D015994:Incidence; D053685:Laser Therapy; D007903:Lens Capsule, Crystalline / Q000473:pathology* / Q000601:surgery; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D009664:Norway / Q000453:epidemiology; D018918:Phacoemulsification; D011183:Postoperative Complications / Q000453:epidemiology* / Q000601:surgery; D012189:Retrospective Studies
chemical_list: D000180:Acrylic Resins; D001672:Biocompatible Materials