title: Ultrasound biomicroscopy and Scheimpflug photography of angle-supported phakic intraocular lens for high myopia.
abstract: OBJECTIVE
  To evaluate the equivalence of Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM) in determining corneal epithelium-intraocular lens (IOL) and border IOL-iris distances.
  
  
  METHODS
  Universität Erlangen-Nuremberg, Erlangen, Germany.
  
  
  METHODS
  In 26 eyes of 17 patients who had a NuVita MA20 angle-supported anterior chamber intraocular lens (Chiron-Domilens), SP and UBM were used to evaluate the distance between the endothelium and the anterior IOL face in central and peripheral regions (12 o'clock and 6 o'clock positions) and between the border of the anterior IOL face and the iris. The Wilcoxon test was used for statistical analysis.
  
  
  RESULTS
  The mean central endothelium-anterior IOL face distance was 2.01 mm and 2.00 mm by SP and UBM, respectively. The mean peripheral endothelium-anterior IOL border distance was 1.28 mm and 1.58 mm, respectively, and the mean peripheral anterior IOL face-iris distance, 0.89 mm and 0.75 mm, respectively.
  
  
  CONCLUSIONS
  The difference between the 2 methods in the central endothelium-anterior IOL face distance was not significant (methods were equivalent), but the difference in the peripheral endothelium-anterior IOL face distance was. This may be the result of difficulty in obtaining the exact transition point between the IOL and the haptics by SP examination. The difference between the 2 methods in the IOL border-iris distance was also significant because of the irregularity of the iris surface; therefore, measurements were performed at different sites along this structure. The significant differences in the peripheral endothelium-IOL and IOL border-iris distances indicate that although both methods are useful, they are not equivalent.
authors.affiliation: Department of Ophthalmology, Federal University of São Paulo, Brazil. Renate.Ferreira@augen.imed.uni-erlangen.de
authors.forename: Renate Ferreira
authors.initials: RF
authors.lastname: de Souza
authors.forename: Norma
authors.initials: N
authors.lastname: Allemann
authors.forename: Adriana
authors.initials: A
authors.lastname: Forseto
authors.forename: Paulo S Moraes
authors.initials: PS
authors.lastname: Barros
authors.forename: Wallace
authors.initials: W
authors.lastname: Chamon
authors.forename: Walton
authors.initials: W
authors.lastname: Nosé
mesh_terms: D000328:Adult; D000869:Anterior Eye Segment / Q000000981:diagnostic imaging* / Q000601:surgery*; D002924:Ciliary Body / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007498:Iris / Q000000981:diagnostic imaging; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000502:physiology*; D007910:Lenses, Intraocular; D008297:Male; D009216:Myopia / Q000601:surgery*; D010781:Photography; D012029:Refraction, Ocular; D014463:Ultrasonography; D014792:Visual Acuity