title: Prospective visual evaluation of apodized diffractive intraocular lenses.
abstract: OBJECTIVE
  To evaluate distance, intermediate, and near visual performance in patients who had multifocal apodized diffractive intraocular lens (IOL) implantation.
  
  
  METHODS
  Fernández-Vega Ophthalmological Institute, Oviedo, Spain.
  
  
  METHODS
  The best corrected distance visual acuity, best distance-corrected near visual acuity, intermediate visual acuity, distance contrast sensitivity under photopic and mesopic conditions, and patient satisfaction were measured in 325 patients and 335 patients who had bilateral implantation of the model SA60D3 IOL (AcrySof ReSTOR, Alcon) and model SN60D3 IOL (AcrySof Natural ReSTOR), respectively.
  
  
  RESULTS
  At the 6-month postoperative visit, binocular best corrected distance acuity with the ReSTOR IOL and the Natural ReSTOR IOL was 0.034 logMAR+/-0.004 (SD) and 0.019+/-0.020 logMAR, respectively (approximately 20/20). Binocular best distance-corrected near acuity was 0.011+/-0.012 logMAR and 0.035+/-0.013 logMAR, respectively (approximately 20/20). Intermediate visual acuity with both IOL models worsened significantly as a function of the distance of the test (P<.01). Photopic contrast sensitivity was within the standard normal range with both IOLs. Under mesopic conditions, contrast sensitivity with both IOLs was comparable to that with monofocal IOLs and lower, particularly at higher spatial frequencies, than under photopic conditions. No statistically significant differences in visual acuity or photopic and mesopic contrast sensitivity were found between the 2 IOL models (P>.1). A patient satisfaction questionnaire showed that both IOLs performed well and were comparable in satisfaction regarding distance, intermediate, and near activities under different lighting conditions.
  
  
  CONCLUSIONS
  The AcrySof ReSTOR IOL and AcrySof Natural ReSTOR IOL provided good visual performance at distance and near under photopic and mesopic conditions. Intermediate vision with both models was reduced compared with distance and near vision.
authors.affiliation: Fernández-Vega Ophthalmological Institute, the Surgery Department, School of Medicine, University of Oviedo, Oviedo, Spain. j.alfonso@fernandez-vega.com
authors.forename: José F
authors.initials: JF
authors.lastname: Alfonso
authors.forename: Luis
authors.initials: L
authors.lastname: Fernández-Vega
authors.forename: M Begoña
authors.initials: MB
authors.lastname: Baamonde
authors.forename: Robert
authors.initials: R
authors.lastname: Montés-Micó
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D018918:Phacoemulsification; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D011788:Quality of Life; D011795:Surveys and Questionnaires; D014792:Visual Acuity / Q000502:physiology*
chemical_list: D000180:Acrylic Resins