title: Influence of biometric parameters on rotational  stability of toric IOLs.
abstract: OBJECTIVE
  The aim of the study was to determine the influence of axial length (AL) and anterior chamber depth (ACD) on the rotational stability of a toric intraocular lens (IOL).
  
  
  METHODS
  In this retrospective study, 40 eyes of 40 patients were included. All patients underwent phacoemulsification and had AcrySof toric IOL implantations. The AL and the ACD (epithelium to lens) were measured using optical coherence biometry. Cornea astigmatism was determined by topography. Rotational stability was measured 1 day, 1 week, 4 weeks, and 3 months postoperatively.
  
  
  RESULTS
  The mean AL and ACD were 23.91 ± 1.51 and 2.91 ± 0.37 mm. The medial rotation was 2.47 ±  22.7, 2.92 ± 2.93, 2.56 ± 2.07, and 2.37 ± 2.29 degrees from baseline at 1 day, 1 week, 4 weeks, and 3 months, respectively. No correlation occurred between AL and ACD and IOL rotation at any time.
  
  
  CONCLUSIONS
  Biometric parameters may not influence the rotational stability of this type of acrylic posterior chamber toric IOL in the short term.
authors.affiliation: Department of Ophthalmology, Charité, University Medicine Berlin, Berlin - Germany. matthias.klamann@charite.de
authors.forename: Matthias K J
authors.initials: MK
authors.lastname: Klamann
authors.forename: Christoph
authors.initials: C
authors.lastname: Von Sonnleithner
authors.forename: Johannes
authors.initials: J
authors.lastname: Gonnermann
authors.forename: Anna-Karina B
authors.initials: AK
authors.lastname: Maier
authors.forename: Necip
authors.initials: N
authors.lastname: Torun
authors.forename: Eckart
authors.initials: E
authors.lastname: Bertelmann
mesh_terms: D000368:Aged; D000867:Anterior Chamber / Q000033:anatomy & histology*; D001251:Astigmatism / Q000175:diagnosis / Q000601:surgery; D058452:Axial Length, Eye / Q000033:anatomy & histology*; D001699:Biometry; D019781:Corneal Topography; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011475:Prosthesis Failure; D012189:Retrospective Studies; D012399:Rotation