title: Refractive lens exchange with a multifocal diffractive aspheric intraocular lens.
abstract: OBJECTIVE
  To evaluate the safety, efficacy and predictability after refractive lens exchange with multifocal diffractive aspheric intraocular lens implantation.
  
  
  METHODS
  Sixty eyes of 30 patients underwent bilateral implantation with AcrySof(®) ReSTOR(®) SN6AD3 intraocular lens with +4.00 D near addition. Patients were divided into myopic and hyperopic groups. Monocular best corrected visual acuity at distance and near and monocular uncorrected visual acuity at distance and near were measured before and 6 months postoperatively.
  
  
  RESULTS
  After surgery, uncorrected visual acuity was 0.08 ± 0.15 and 0.11 ± 0.14 logMAR for the myopic and hyperopic groups, respectively (50% and 46.67% of patients had an uncorrected visual acuity of 20/20 or better in the myopic and hyperopic groups, respectively). The safety and efficacy indexes were 1.05 and 0.88 for the myopic and 1.01 and 0.86 for the hyperopic groups at distance vision. Within the myopic group, 20 eyes remained unchanged after the surgery, and 3 gained >2 lines of best corrected visual acuity. For the hyperopic group, 2 eyes lost 2 lines of best corrected visual acuity, 21 did not change, and 3 eyes gained 2 lines. At near vision, the safety and efficacy indexes were 1.23 and 1.17 for the myopic and 1.16 and 1.13 for the hyperopic groups. Best corrected near visual acuity improved after surgery in both groups (from 0.10 logMAR to 0.01 logMAR in the myopic group, and from 0.10 logMAR to 0.04 logMAR in the hyperopic group).
  
  
  CONCLUSIONS
  The ReSTOR(®) SN6AD3 intraocular lens in refractive lens exchange demonstrated good safety, efficacy, and predictability in correcting high ametropia and presbyopia.
authors.affiliation: Optics Department, University of Valencia, Spain.
authors.forename: Teresa
authors.initials: T
authors.lastname: Ferrer-Blasco
authors.forename: Santiago
authors.initials: S
authors.lastname: García-Lázaro
authors.forename: César
authors.initials: C
authors.lastname: Albarrán-Diego
authors.forename: Lurdes
authors.initials: L
authors.lastname: Belda-Salmerón
authors.forename: Robert
authors.initials: R
authors.lastname: Montés-Micó
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D006956:Hyperopia / Q000503:physiopathology; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007908:Lens, Crystalline / Q000601:surgery*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000503:physiopathology; D011446:Prospective Studies; D011474:Prosthesis Design; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology