title: Optical and visual performance of diffractive intraocular lens implantation after myopic laser in situ keratomileusis.
abstract: OBJECTIVE
  To evaluate the optical and visual quality in eyes with diffractive intraocular lenses (IOLs) after myopic laser in situ keratomileusis (LASIK).
  
  
  METHODS
  Fernández-Vega Ophthalmological Institute, Oviedo, Spain.
  
  
  METHODS
  The best corrected visual acuity (BCVA [distance]) at 12.5%, 25.0%, and 100% contrasts under photopic and mesopic conditions; best distance-corrected near acuity; corneal total higher-order aberrations (HOAs); and optical quality by modulation transfer function (MTF) were measured after myopic LASIK in eyes with a spherical AcrySof ReSTOR SN60D3 IOL or an aspheric Acri.LISA 366D IOL and phakic eyes (control).
  
  
  RESULTS
  Under photopic conditions at 100% contrast, the BCVA was 0.1 logMAR or better in all groups. At 25.0% and 12.5% contrasts, there were no statistically significant differences between the aspheric IOL group and the spherical IOL or control group (P >.01). The control group had better BCVA than the spherical IOL group (P = .0002, 25.0%; P<.0001, 12.5%). Under mesopic conditions, the aspheric IOL group had better BCVA than the spherical IOL group at all contrasts (P<.01). There was no statistically significant difference between the 2 IOL groups in mean best distance-corrected near acuity or between all 3 groups in HOAs (P >.01). With 6.0 mm and 3.0 mm pupils, there were no statistically significant differences in MTF between the aspheric IOL group and the control group; both groups had better MTF than the spherical IOL group with a 6.0 mm pupil (P<.01).
  
  
  CONCLUSIONS
  After LASIK, the aspheric IOL provided better visual quality and optical quality than spherical IOL under mesopic conditions (large pupil).
authors.affiliation: Fernández-Vega Ophthalmological Institute, Surgery Department, School of Medicine, University of Oviedo, Oviedo, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Fernández-Vega
authors.forename: David
authors.initials: D
authors.lastname: Madrid-Costa
authors.forename: José F
authors.initials: JF
authors.lastname: Alfonso
authors.forename: Robert
authors.initials: R
authors.lastname: Montés-Micó
authors.forename: Arancha
authors.initials: A
authors.lastname: Poo-López
mesh_terms: D000368:Aged; D002386:Cataract / Q000209:etiology; D015350:Contrast Sensitivity / Q000502:physiology; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D054018:Lasers, Excimer / Q000627:therapeutic use*; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D018918:Phacoemulsification; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D014792:Visual Acuity / Q000502:physiology*