title: Comparison of pseudoaccommodation and visual quality between a diffractive and refractive multifocal intraocular lens.
abstract: OBJECTIVE
  To determine depth of focus and visual quality after implantation of a diffractive intraocular lens (IOL) and a refractive IOL.
  
  
  METHODS
  University Eye Clinic, Vienna, Austria.
  
  
  METHODS
  This study comprised 10 eyes of 9 patients with a diffractive IOL (3M 825x + 4) and 13 eyes of 9 patients with a refractive lens (AMO Array SSM 26NB). Depth of focus was evaluated in a defocused range of -6.0 to +3.0 diopters (D), and Snellen visual acuity was recorded.
  
  
  RESULTS
  Distance acuity peaked at 1.0 +/- 0.2 (3M group) and 0.91 +/- 0.13 (AMO group). The near acuity peaks were at 0.82 +/- 0.15 and 0.55 +/- 0.14, respectively. Visual acuity of 0.5 was possible in a range of defocus of +1.0 to -4.0 D (3M) and +1.0 to -3.5 D (AMO).
  
  
  CONCLUSIONS
  Pseudoaccommodation and full distance visual acuity were realized with both types of multifocal lenses. For intermediate distances, visual acuity may be limited to activities that do not require optimal vision. At near distances, the 3M lens provided statistically significantly better visual acuity.
authors.affiliation: University Eye Clinic Vienna, Wien, Austria.
authors.forename: H
authors.initials: H
authors.lastname: Weghaupt
authors.forename: S
authors.initials: S
authors.lastname: Pieh
authors.forename: C
authors.initials: C
authors.lastname: Skorpik
mesh_terms: D000065:Accommodation, Ocular; D000368:Aged; D019923:Capsulorhexis; D003867:Depth Perception / Q000502:physiology*; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D014792:Visual Acuity / Q000502:physiology*