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.
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.
Authors: Rouzbeh Amini; Julie E Whitcomb; Tiago S Prata; Syril Dorairaj; Jeffrey M Liebmann; Robert Ritch; Victor H Barocas Journal: J Ophthalmic Vis Res Date: 2010-07
Authors: Alexander K Schuster; Norbert Pfeiffer; Stefan Nickels; Andreas Schulz; Philipp S Wild; Maria Blettner; Karl Lackner; Manfred E Beutel; Thomas Münzel; Urs Vossmerbaeumer Journal: J Ophthalmol Date: 2017-09-11 Impact factor: 1.909