title: Refractive outcomes of phacoemulsification and intraocular lens implantation after pars plana vitrectomy.
abstract: OBJECTIVE
  To describe the visual acuity outcomes of patients undergoing phacoemulsification and intraocular lens implantation after pars plana vitrectomy, and to compare of refractive errors after phacoemulsification and intraocular lens implantation in the cases of vitrectomized eyes and nonvitrectomized eyes.
  
  
  METHODS
  The subjects of this study were 45 eyes performed phacoemulsification after vitrectomy from January 2004 to February 2007. Office records were reviewed for best-corrected visual acuity before and after phacoemulsification. In 45 vitrectomized eyes (Group V) and 50 nonvitrectomized eyes (Group P), we compared the predicted refraction by preoperative data, and actual postoperative refraction of postoperative 2 months.
  
  
  RESULTS
  The average interval from pars plana vitrectomy to phacoemulsification was 11.5 months. In Group V, 41 of 45 eyes (91.1%) had improved best-corrected visual acuity more than one line, after phacoemulsification. Although, more hyperopic shift was noted in Group V than Group P, there was no significant difference between the predicted refraction by preoperative data and postoperative manifest refraction in both groups.
  
  
  CONCLUSIONS
  Phacoemulsification after pars plana vitrectomy showed no significant difference between the predicted refraction by preoperative data and the actual postoperative refraction.
authors.affiliation: Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
authors.forename: Na Young
authors.initials: NY
authors.lastname: Lee
authors.forename: Shin Hae
authors.initials: SH
authors.lastname: Park
authors.forename: Choun Ki
authors.initials: CK
authors.lastname: Joo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000209:etiology*; D002387:Cataract Extraction / Q000379:methods*; D005260:Female; D006801:Humans; D006956:Hyperopia / Q000503:physiopathology; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011184:Postoperative Period; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000503:physiopathology; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity; D014821:Vitrectomy / Q000009:adverse effects / Q000379:methods*