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References OMIM Gene GeneReviews HGMD HGNC
last update : 12/03/2007
Symbol PERRS
Location 17q24.1
Name prolonged electroretinal response suppression
Other name(s) bradyopsia
Corresponding gene RGS9
Main clinical features
  • bradyopsia: difficulty adapting to sudden changes in luminance levels mediated by cones
  • standard visual acuity was normal to moderately subnormal, but the ability to see moving objects, especially with low-contrast, was severely reduced despite full visual fields; .
  • Genetic determination not applicable
    Function/system disorder eye
    Type disease
    Gene product
    Name regulator of G-protein signalling 9 or its membrane anchor protein RGS9BP