title: Evaluation of eyes with relative pupillary block by indentation ultrasound biomicroscopy gonioscopy.
abstract: OBJECTIVE
  To investigate changes in anterior chamber angle configuration with indentation ultrasound biomicroscopy gonioscopy of relative pupillary block (RPB).
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  This study included 26 eyes of 26 patients with RPB. We determined angle opening distance 500 and angle recess area using indentation ultrasound biomicroscopy gonioscopy and compared a small-sized standard eye cup with a new eye cup with an area for inducing pressure.
  
  
  RESULTS
  Indentation ultrasound biomicroscopy images documented concavity of the iris in eyes with RPB. Both the new and the small standard eye cups widened the anterior chamber angle significantly (P <.0001) without causing corneal damage. Angle changes were significantly greater for the new eye cup design.
  
  
  CONCLUSIONS
  Indentation ultrasound biomicroscopy gonioscopy is a useful technique for observation and diagnosis of RPB. Using a small standard or the newly designed eye cup, the procedure can be performed easily and without causing corneal damage.
authors.affiliation: Department of Ophthalmology, Mie University School of Medicine, Tsu, Japan. itokunio@clin.medic.mie-u.ac.jp
authors.forename: Koichi
authors.initials: K
authors.lastname: Matsunaga
authors.forename: Kunio
authors.initials: K
authors.lastname: Ito
authors.forename: Koji
authors.initials: K
authors.lastname: Esaki
authors.forename: Kota
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Toru
authors.initials: T
authors.lastname: Sano
authors.forename: Katsuya
authors.initials: K
authors.lastname: Miura
authors.forename: Mikio
authors.initials: M
authors.lastname: Sasoh
authors.forename: Yukitaka
authors.initials: Y
authors.lastname: Uji
mesh_terms: D000368:Aged; D000869:Anterior Eye Segment / Q000000981:diagnostic imaging*; D003430:Cross-Sectional Studies; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000000981:diagnostic imaging*; D006068:Gonioscopy / Q000295:instrumentation; D006801:Humans; D007499:Iris Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008853:Microscopy; D011681:Pupil Disorders / Q000000981:diagnostic imaging*; D014463:Ultrasonography