title: [Higher order aberrations after implantation of an iris claw pIOL (Ophtec Artisan) in the phakic eye].
abstract: BACKGROUND
  The purpose of the present study is to demonstrate the change of higher order wavefront aberrations (HOA) after implantation of an iris claw pIOL.
  
  
  METHODS
  Thirteen eyes of seven patients were examined preoperatively and 1 month after implantation of an Artisan lens. The mean preoperative spherical equivalent was -10.69+/-1.92 D (-7.63 to -14.88 D). The diameter of the IOL optic was 6 mm and the lens was inserted though a tunnel incision at 12 o'clock. The root mean square (RMS) wavefront error was computed for all aberrations of the third to fifth order for pupil diameters of 3.5 and 6 mm.
  
  
  RESULTS
  On average, HOA RMS changed for a 3.5 mm pupil by 0.037+/-0.089 microm (6 mm pupil: 0.405+/-0.245 microm). Third-order aberrations changed by 0.031+/-0.098 microm (0.320+/-0.269 microm). For both pupil diameters, a notable increase of Z 3,-3 of 0.117+/-0.085 microm (0.596+/-0.350 microm) could be observed depending on the distance between the limbus and incision. Fourth-order aberrations changed on average by 0.018+/-0.037 microm (0.280+/-0.143 microm), namely Z 4,0 increased by 0.025+/-0.034 microm (0.296+/-0.164 microm).
  
  
  CONCLUSIONS
  After implantation of the Artisan lens HOA increased slightly. Particularly induction of Z 3,-3 and Z 4,0 contribute to the increase of HOA. The induction of trefoil ( Z 3,-3) is a result of the incision, whereas the increase of spherical aberration is due to the implant.
authors.affiliation: Klinik für Augenheilkunde, Johann Wolfgang Goethe-Universität, Frankfurt am Main.
authors.forename: J
authors.initials: J
authors.lastname: Bühren
authors.forename: T
authors.initials: T
authors.lastname: Kasper
authors.forename: E
authors.initials: E
authors.lastname: Terzi
authors.forename: T
authors.initials: T
authors.lastname: Kohnen
mesh_terms: D000328:Adult; D003627:Data Interpretation, Statistical; D005500:Follow-Up Studies; D006801:Humans; D007498:Iris; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D016014:Linear Models; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D055095:Optics and Photonics; D011446:Prospective Studies; D011474:Prosthesis Design; D011680:Pupil / Q000502:physiology; D012029:Refraction, Ocular; D013997:Time Factors; D014792:Visual Acuity