title: Synchrony dual-optic accommodating intraocular lens. Part 2: pilot clinical evaluation.
abstract: OBJECTIVE
  To evaluate the clinical outcomes of an accommodating dual-optic intraocular lens (IOL).
  
  
  METHODS
  Private practice and university centers.
  
  
  METHODS
  A prospective noncomparative case series with retrospective control comprised 21 patients (26 eyes) scheduled for small-incision extracapsular cataract extraction by phacoemulsification with implantation of the Synchrony dual-optic accommodating IOL (Visiogen) (accommodating IOL group) and 10 patients who had small-incision extracapsular phacoemulsification with implantation of a monofocal, single-optic IOL at least 6 months previously (control group). Patients were examined 1, 3, 6, and 12 months after surgery. Defocus curves in the accommodating IOL group were compared with those in the control group. The main outcome measures were postoperative distance uncorrected and best corrected visual acuity; near uncorrected, distance corrected, and near corrected visual acuity; and accommodative range based on defocus curves.
  
  
  RESULTS
  Twenty-four eyes were available at the 6-month follow-up visit. All eyes had best corrected distance visual acuity of 20/40 or better, and 19 eyes (79%) had an uncorrected distance visual acuity of 20/40 or better. Uncorrected near visual acuity was 20/40 or better in all eyes. With distance correction, 23 eyes (96%) had an acuity of 20/40 or better at near. Defocus curve analysis suggested a mean accommodative range of 3.22 diopters (D) +/- 0.88 (SD) (range 1.00 to 5.00 D) in the accommodating IOL group and 1.65 +/- 0.58 D in the control group (range 1.00 to 2.50 D) (P<.05).
  
  
  CONCLUSIONS
  The Synchrony dual-optic IOL shows promise as an option to provide accommodative function in pseudophakic patients.
authors.affiliation: Department of Ophthalmology, Fundacion Oftalmologica de Santander, Bucaramanga, Colombia.
authors.forename: Ivan L
authors.initials: IL
authors.lastname: Ossma
authors.forename: Andrea
authors.initials: A
authors.lastname: Galvis
authors.forename: Luis G
authors.initials: LG
authors.lastname: Vargas
authors.forename: Michelle J
authors.initials: MJ
authors.lastname: Trager
authors.forename: M Reza
authors.initials: MR
authors.lastname: Vagefi
authors.forename: Stephen D
authors.initials: SD
authors.lastname: McLeod
mesh_terms: D000065:Accommodation, Ocular / Q000502:physiology*; D000328:Adult; D000368:Aged; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D010865:Pilot Projects; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D012029:Refraction, Ocular / Q000502:physiology; D012189:Retrospective Studies; D014792:Visual Acuity / Q000502:physiology