title: Prospective analysis of visual outcomes using apodized, diffractive multifocal intraocular lenses following phacoemulsification for cataract or clear lens extraction.
abstract: BACKGROUND
  To evaluate efficacy, safety and predictability of apodized, diffractive multifocal intraocular lenses.
  
  
  METHODS
  Prospective, observational study. PARTICIPANTS OR SAMPLE: Two hundred three patients (363 eyes) underwent surgery for cataract (54.8%) or clear lens extraction (45.2%).
  
  
  METHODS
  A study of consecutive patients undergoing lens extraction with insertion of the AcrySof Natural ReSTOR intraocular lens (SN60D3). Assessment included: refraction, corneal topography, biometry, monocular and binocular uncorrected and best spectacle corrected distance and near visual acuity.
  
  
  METHODS
  Visual acuity, spectacle dependence.
  
  
  RESULTS
  Mean preoperative best corrected visual acuity was 6/12 (cataract) and 6/6 (clear lens extraction). One hundred sixty-one (98.2%) of the clear lens extraction group were hyperopic and presbyopic (mean spherical equivalent +4.25±3.5D). Postoperatively uncorrected visual acuity was ≥6/12 in 96.5% of eyes (51.9% ≥6/6) and ≥ N5 in 95% of eyes. At 6 months, 182 eyes (91.4%) (cataract) and 137 eyes (83.5%) (clear lens extraction) were ≤0.50 D of target spherical equivalent. Spectacle independence was reported in 81.9% (n=168). Minor halos or other visual phenomena were reported in 10.2%. No subjects required intraocular lens exchange. Safety index at 6 months was 2.5 and 1.17 for cataract and clear lens extraction, respectively.
  
  
  CONCLUSIONS
  The apodized, diffractive multifocal intraocular lens predictably provided excellent near uncorrected visual acuity and good distance uncorrected visual acuity following cataract and clear lens extraction surgery with a high rate of spectacle independence. A minority of subjects note halos and other visual phenomena that may be related to intraocular lens design.
authors: Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, New Zealand.
authors: Rasha
authors: R
authors: Altaie
authors: C Peter
authors: CP
authors: Ring
authors: Jasha
authors: J
authors: Morarji
authors: Dipika V
authors: DV
authors: Patel
authors: Charles N J
authors: CN
authors: McGhee
mesh_terms: D000368:Aged; D001699:Biometry; D002386:Cataract / Q000150:complications*; D019781:Corneal Topography; D005139:Eyeglasses / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000601:surgery*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011446:Prospective Studies; D019591:Pseudophakia / Q000503:physiopathology*; D012029:Refraction, Ocular / Q000502:physiology; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology*