title: Three-year stability of an angle-supported foldable hydrophobic acrylic phakic intraocular lens evaluated by Scheimpflug photography.
abstract: OBJECTIVE
  To examine the postoperative positional stability of a new angle-supported, hydrophobic acrylic phakic intraocular lens (pIOL).
  
  
  METHODS
  Department of Ophthalmology, Goethe-University, Frankfurt am Main, Germany.
  
  
  METHODS
  In this prospective nonrandomized clinical trial, eyes with moderate to high myopia had implantation of an angle-supported pIOL (AcrySof Cachet). Scheimpflug imaging was performed preoperatively and postoperatively at 1, 3, 6 to 12, and 24 to 36 months. The main outcome measures were the distance between the corneal endothelium and the IOL and between the IOL and the crystalline lens. The overall significance threshold was P = .05.
  
  
  RESULTS
  Twenty-one of the 26 eyes (26 patients) evaluated were included in the statistical analysis. Analysis of variance showed no statistically significant differences in absolute endothelium-IOL or IOL-crystalline lens measurements at any postoperative visit. The mean endothelium-IOL distance was 2.05 mm +/- 0.25 (SD) at 1 month and 2.15 +/- 0.29 mm at 24 to 36 months and the mean IOL-crystalline distance, 0.92 +/- 0.23 mm and 0.86 +/- 0.22 mm, respectively. A 1-way t test showed a small but significant difference compared with zero in the overall change in the endothelium-IOL distance (mean 0.08 +/- 0.16 mm) and thus in the overall calculated anterior chamber depth (mean 0.07 +/- 0.08 mm); the difference was not significant for the IOL-crystalline lens change (mean -0.05 +/- 0.13 mm).
  
  
  CONCLUSIONS
  The angle-supported foldable hydrophobic pIOL maintained adequate central clearance distances to the corneal endothelium and the natural crystalline lens over 3 years.
  
  
  BACKGROUND
  Neither author has a financial or proprietary interest in any material or method mentioned. Additional disclosure is found in the footnotes.
authors.affiliation: Department of Ophthalmology, Goethe-University, Frankfurt am Main, Germany. kohnen@em.uni-frankfurt.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Kohnen
authors.forename: Oliver K
authors.initials: OK
authors.lastname: Klaproth
mesh_terms: D000180:Acrylic Resins; D000293:Adolescent; D000328:Adult; D000869:Anterior Eye Segment / Q000601:surgery*; D004728:Endothelium, Corneal / Q000473:pathology; D005260:Female; D006068:Gonioscopy; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007908:Lens, Crystalline / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D054120:Phakic Intraocular Lenses; D010781:Photography / Q000379:methods*; D011446:Prospective Studies; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult
chemical_list: D000180:Acrylic Resins