August 2007

Bradyopsia in an Asian Man

Author Affiliations

Copyright 2007 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2007

Arch Ophthalmol. 2007;125(8):1138-1140. doi:10.1001/archopht.125.8.1138

Bradyopsia is a rare retinal disorder, first described in 3 unrelated Dutch families.1 Patients with bradyopsia have difficulty tracking moving objects and adapting to sudden changes in luminance levels owing to a defect in the photoreceptor deactivation mechanism within the phototransduction cascades. Homozygous mutations in either the regulator G-protein signaling 9 (RGS9) or RGS9 anchor protein (R9AP) gene that encode the photoreceptor GTPase accelerating protein and its anchor protein, respectively, have been identified in patients with bradyopsia.2 We report a case of bradyopsia in an Asian man with characteristic electrophysiological and genetic findings. This study was approved by the institutional review board of the Singapore Eye Research Institute.

First Page Preview View Large
First page PDF preview
First page PDF preview