Exercise and reversed pupillary block in pigmentary glaucoma

Am J Ophthalmol. 1995 Jul;120(1):110-2. doi: 10.1016/s0002-9394(14)73767-5.


Purpose/methods: The effect of exercise on the iris contour was investigated with ultrasound biomicroscopy in two patients with pigmentary glaucoma.

Results/conclusion: 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.

MeSH terms

  • Anterior Chamber / diagnostic imaging
  • Exercise*
  • Exfoliation Syndrome / etiology
  • Glaucoma, Open-Angle / physiopathology*
  • Glaucoma, Open-Angle / surgery
  • Humans
  • Iris / physiopathology*
  • Iris / surgery
  • Laser Therapy
  • Pupil Disorders / etiology
  • Pupil Disorders / physiopathology*
  • Ultrasonography