title: Influences of optic edge design on posterior capsule opacification and anterior capsule contraction.
abstract: OBJECTIVE
  To investigate the influence of optic edge design on posterior capsule opacification (PCO) and anterior capsule contraction (ACC).
  
  
  METHODS
  A total of 43 eyes of 43 patients scheduled to undergo cataract surgery were included in this study. Patients received either a Sensor AR40 intraocular lens (IOL) or a Sensor AR40e IOL. The area of the anterior capsule opening (ACO) was determined by diaphanoscopy using the anterior eye segment analysis system EAS-1000 at 1 day, 1 week and 1, 3, 6 and 12 months postoperatively. Posterior capsule opacification was evaluated objectively in two ways, using either the EAS-1000 or POCOman.
  
  
  RESULTS
  There was no significant difference between the two groups in either ACO area or percentage reduction of ACO area at any time-point after surgery. The difference in the degree of PCO 1 year after surgery was not significant when measured by either the EAS-1000 or POCOman.
  
  
  CONCLUSIONS
  A sharp IOL edge is required to prevent PCO. Sharp-edged IOLs do not appear to be a risk factor for ACC.
authors.affiliation: Miyata Eye Hospital, Miyakonojo, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Miyata
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kato
authors.forename: Ryohei
authors.initials: R
authors.lastname: Nejima
authors.forename: Takashi
authors.initials: T
authors.lastname: Miyai
authors.forename: Masato
authors.initials: M
authors.lastname: Honbo
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Ohtani
mesh_terms: D000368:Aged; D002386:Cataract / Q000517:prevention & control*; D003286:Contracture / Q000517:prevention & control*; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000473:pathology*; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D018918:Phacoemulsification; D011183:Postoperative Complications; D011446:Prospective Studies; D011474:Prosthesis Design