title: Visual acuity comparison of 2 models of bifocal aspheric intraocular lenses.
abstract: OBJECTIVE
  To compare visual acuity after bilateral implantation of 2 models of multifocal aspheric intraocular lenses (IOLs).
  
  
  METHODS
  Fernández-Vega Ophthalmological Institute, Oviedo, and University of Valencia, Valencia, Spain.
  
  
  METHODS
  Prospective study of patients who had bilateral implantation of an AcrySof ReSTOR SN6AD3 IOL (Group 1) or an Acri.LISA 366D IOL (Group 2). Six months postoperatively, binocular uncorrected and best corrected distance visual acuity, uncorrected-distance and best distance-corrected near visual acuity, best corrected intermediate visual acuity, and the defocus curve were measured in both IOL groups.
  
  
  RESULTS
  Group 1 comprised 36 eyes (18 patients) and Group 2, 40 eyes (20 patients). The mean binocular values in Group 1 and Group 2, respectively, were as follows: best corrected distance acuity, -0.05 +/- 0.09 logMAR and -0.08 +/- 0.08 logMAR (both approximately 20/20); best distance-corrected near acuity, -0.01 +/- 0.16 logMAR and -0.05 +/- 0.07 logMAR; best corrected intermediate acuity at 80 cm, 0.20 +/- 0.18 logMAR (approximately 20/32) and 0.16 +/- 0.13 logMAR (approximately 20/25) and at 60 cm, 0.16 +/- 0.16 logMAR (approximately 20/25) and 0.18 +/- 0.13 logMAR (approximately 20/25). There were no statistically significant between-group differences in visual acuity at any distance (P>.3). Defocus curves were similar between groups (2.00 to -5.00 diopters) (P>.26).
  
  
  CONCLUSIONS
  The 2 multifocal aspheric IOL models gave similar and good high-contrast visual acuity at distance and near. Intermediate visual acuity, also comparable between IOL models, was better than published results of a spherical IOL model.
authors.affiliation: Fernández-Vega Ophthalmological Institute, 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: Cristina
authors.initials: C
authors.lastname: Puchades
authors.forename: Luis
authors.initials: L
authors.lastname: Fernández-Vega
authors.forename: Robert
authors.initials: R
authors.lastname: Montés-Micó
authors.forename: Beatriz
authors.initials: B
authors.lastname: Valcárcel
authors.forename: Teresa
authors.initials: T
authors.lastname: Ferrer-Blasco
mesh_terms: D000180:Acrylic Resins; D000368:Aged; D003867:Depth Perception / Q000502:physiology; D005260:Female; D007839:Functional Laterality; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*
chemical_list: D000180:Acrylic Resins