title: The effects of three-piece or single-piece acrylic intraocular lens implantation on posterior capsule opacification.
abstract: OBJECTIVE
  To evaluate the development of posterior capsule opacification (PCO) in patients implanted with 5.5 mm optics, single-piece or three-piece acrylic intraocular lens (IOL) in cataract surgery prospectively.
  
  
  METHODS
  This study was carried out on 267 eyes of 249 patients implanted with three-piece, 5.5 mm optics, acrylic IOL and 252 eyes of 244 patients implanted with single-piece, 5.5 mm optics, acrylic IOL by phacoemulsification technique between September 2001 and February 2003. A total of 519 eyes of 493 patients were prospectively evaluated for PCO development during the 25-month period. All the patients were analyzed periodically with anterior segment retroillumination photography. The data provided were analyzed with chi-square method.
  
  
  RESULTS
  The results between the two groups for PCO development were not statistically significant. However, there was a prominent opacification of the posterior capsule where the optic and haptic junction of IOL was positioned in some patients implanted with single-piece IOL. During the follow-up period, no patients implanted with either three-piece or single-piece acrylic IOL required Nd:YAG laser capsulotomy.
  
  
  CONCLUSIONS
  Biocompatibility and reduced rate of PCO development are among the leading features of new generation IOLs. The intracapsular implantation of 5.5 mm optics acrylic IOLs resulted in decreased incidence of PCO and therefore greater patient satisfaction. Further studies investigating the effects of IOL optics, haptic structure and length, capsulorrhexis size, and IOL material and design features on PCO development will clarify the subject.
authors.affiliation: Gata H. Paşa Training Hospital, Istanbul--Turkey.
authors.forename: A H
authors.initials: AH
authors.lastname: Bilge
authors.forename: U
authors.initials: U
authors.lastname: Aykan
authors.forename: T
authors.initials: T
authors.lastname: Akin
authors.forename: U
authors.initials: U
authors.lastname: Unsal
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D000369:Aged, 80 and over; D001672:Biocompatible Materials; D002386:Cataract / Q000517:prevention & control*; D005260:Female; D006801:Humans; D007903:Lens Capsule, Crystalline; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000379:methods; D019904:Polymethyl Methacrylate; D011183:Postoperative Complications / Q000517:prevention & control*; D011446:Prospective Studies; D011474:Prosthesis Design
chemical_list: D000180:Acrylic Resins; D001672:Biocompatible Materials; D019904:Polymethyl Methacrylate