title: Functional outcomes after bilateral implantation of apodized diffractive aspheric acrylic intraocular lenses with a +3.0 or +4.0 diopter addition power Randomized multicenter clinical study.
abstract: OBJECTIVE
  To evaluate functional outcomes after bilateral implantation of apodized diffractive aspheric acrylic intraocular lenses (IOLs) with a +3.0 or +4.0 diopter (D) addition (add) power.
  
  
  METHODS
  Twelve study centers in the United States.
  
  
  METHODS
  This randomized patient-masked parallel-group 6-month follow-up study comprised patients having bilateral cataract extraction with implantation of an AcrySof IQ ReSTOR SN6AD3 IOL with a +4.0 D add power (+4.0 D group) or an AcrySof IQ ReSTOR SN6AD1 IOL with a +3.0 D add power (+3.0 D group) (both IOLs, Alcon, Inc.). Visual acuity, defocus testing, patient-reported outcomes, and safety measures were assessed.
  
  
  RESULTS
  Of the 279 patients, 141 were in the +3.0 D group and 138 were in the +4.0 D group. Binocular distance-corrected intermediate visual acuity was statistically significantly better in the +3.0 D group than in the +4.0 D group (P<.0001); there was no difference in binocular near or distance visual acuity. There were no statistically significant differences in visual disturbances between the 2 groups. Patients in both groups reported excellent overall spectacle independence, near visual function, and satisfaction with the IOLs.
  
  
  CONCLUSIONS
  Intermediate vision at a mean reading distance of approximately 40 cm was better with the aspheric IOL with a +3.0 D add than with the aspheric IOL with a +4.0 D add, as shown by the near peak in the mean binocular defocus curve; near and distance acuity were similar between the 2 IOLs. Patients reported excellent overall quality of vision, spectacle independence, and satisfaction.
authors.affiliation: California Eye Institute, 1360 East Herndon, Suite 410, Fresno, California 93720, USA. amaxwell@gohighspeed.com
authors.forename: W Andrew
authors.initials: WA
authors.lastname: Maxwell
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Cionni
authors.forename: Robert P
authors.initials: RP
authors.lastname: Lehmann
authors.forename: Satish S
authors.initials: SS
authors.lastname: Modi
mesh_terms: D000180:Acrylic Resins; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004311:Double-Blind Method; D005260:Female; D007839:Functional Laterality; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D018918:Phacoemulsification; D011446:Prospective Studies; D019591:Pseudophakia / Q000503:physiopathology*; D011795:Surveys and Questionnaires; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*
chemical_list: D000180:Acrylic Resins