title: Exercise and reversed pupillary block in pigmentary glaucoma.
abstract: OBJECTIVE
  The effect of exercise on the iris contour was investigated with ultrasound biomicroscopy in two patients with pigmentary glaucoma.
  
  
  CONCLUSIONS
  Ten minutes of bicycle exercise strikingly increased the iris concavity. After Nd:YAG laser iridotomy the iris remained plane after a repeated exercise test. We believe that exercise increased the ocular pulse, which augmented cyclic aqueous movements through the pupil. Combined with a reverse pupillary block, the resulting intermittent excessive iris concavity caused pigment dispersion.
authors.affiliation: Eye Department, National University Hospital, Copenhagen, Denmark.
authors.forename: P K
authors.initials: PK
authors.lastname: Jensen
authors.forename: O
authors.initials: O
authors.lastname: Nissen
authors.forename: S V
authors.initials: SV
authors.lastname: Kessing
mesh_terms: D000867:Anterior Chamber / Q000000981:diagnostic imaging; D015444:Exercise; D017889:Exfoliation Syndrome / Q000209:etiology; D005902:Glaucoma, Open-Angle / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D007498:Iris / Q000503:physiopathology* / Q000601:surgery; D053685:Laser Therapy; D011681:Pupil Disorders / Q000209:etiology / Q000503:physiopathology*; D014463:Ultrasonography