title: [Retroiridal implantation of a Verisyse™ iris claw lens: refractive outcome and individualized intraocular lens constants].
abstract: BACKGROUND
  Evaluation of refractive predictability with retroiridal implantation of a Verisyse(TM) iris-claw lens (AMO) and optimization of the IOL-constants recommended by the manufacturer.
  
  
  METHODS
  A retrospective study after retroiridal iris-claw lens implantation in the years 2007-2012 including 52 eyes of 50 patients with a lack of capsular support was carried out. Follow-up data was recorded on average 5 weeks after surgery. Demographic data, indications, accompanying diseases, biometrical data and refractive outcome were analysed and an individualization of the intraocular lens constants for the SRK/T-, Holladay-1, Hoffer-Q and Haigis-formula was carried out.
  
  
  RESULTS
  Indications for retroiridal implantation of a Verisyse(TM) lens were IOL luxation (32.7 %), complicated primary cataract surgery (25.0 %), secondary IOL Implantation (19.2 %), lens exchange (19.2 %) and luxation of the crystalline lens (3.8 %). Accompanying diseases were pancreatic diabetes (21.2 %), rheumatic diseases (7.7 %), homocystinuria (1.9 %), pseudoexfoliation of lens capsule (23.1 %), traumata (23.1 %), secondary glaucoma (23.1 %), proliferative diabetic retinopathy (9.6 %) and age related macular degeneration (5.8 %). Optimized IOL constants were an A-constant of 116.8 for the SRK/T formula, a surgeon factor (Holladay1) of 0.8, a pACD (HofferQ) of 4,4 and an a0 constant of 0,49 for the Haigis formula. Postoperative deviation of target refraction was within ± 2 D in 84.6 % of the eyes.
  
  
  CONCLUSIONS
  The retroiridal Verisyse(TM) intraocular lens shows a broad spectrum of indications and achieves a good visual outcome. The previously published IOL constants show optimization potential due to the small number of cases.
authors.affiliation: Institut für Experimentelle Ophthalmologie, Universität des Saarlandes, Kirrberger Str. 100, 66424, Homburg/Saar, Deutschland, ex.ophthal@uniklinikum-saarland.de.
authors.forename: I
authors.initials: I
authors.lastname: Schmidt
authors.forename: A
authors.initials: A
authors.lastname: Langenbucher
authors.forename: S
authors.initials: S
authors.lastname: Moussa
authors.forename: F
authors.initials: F
authors.lastname: Schirra
authors.forename: B
authors.initials: B
authors.lastname: Seitz
authors.forename: T
authors.initials: T
authors.lastname: Eppig
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001035:Aphakia / Q000175:diagnosis* / Q000628:therapy*; D019544:Equipment Failure Analysis; D005260:Female; D006801:Humans; D007498:Iris / Q000601:surgery*; D019654:Lens Implantation, Intraocular / Q000379:methods*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D017755:Prosthesis Fitting / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult