Retinal Cone Dystrophy 3B

Alternative Names

  • RCD3B
  • Cone Dystrophy With Supernormal Rod Responses
  • CDSRR
  • Cone Dystrophy With Night Blindness And Supernormal Rod Responses, KCNV2-Related
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WHO-ICD-10 version:2010

Diseases of the eye and adnexa

Disorders of choroid and retina

OMIM Number

610356

Gene Map Locus

9p24.2

Description

Cone dystrophy with supernormal rod responses (CDSRR) is characterized by onset in the first or second decade of life of very marked photophobia, myopia, reduced color vision along the red-green axis with relatively preserved tritan discrimination, and central scotomata with peripheral widespread sensitivity loss predominating in the superior visual field. Nyctalopia is a later feature of the disorder. There is often retinal pigment epithelium disturbance at the macula with a normal retinal periphery. Autofluorescence (AF) imaging shows either a perifoveal ring or a central macular area of relative increased AF. [From OMIM]

Epidemiology in the Arab World

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Subject IDCountrySexFamily HistoryParental ConsanguinityHPO TermsVariantZygosityMode of InheritanceReferenceRemarks
610356.1United Arab EmiratesMale Cone/cone-rod dystrophy; Reduced visual ...NM_133497.4:c.325C>THomozygousAutosomal, RecessiveKhan. 2020; Georgiou et al. 2021
610356.2.1United Arab EmiratesMaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006
610356.2.2United Arab EmiratesFemaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 First cousin of 6103...
610356.2.3United Arab EmiratesMaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 First cousin of 6103...
610356.2.4United Arab EmiratesFemaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 First cousin of 6103...
610356.2.5United Arab EmiratesFemaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 First cousin of 6103...
610356.2.6United Arab EmiratesFemaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 Daughter of 610356.2...
610356.2.7United Arab EmiratesFemaleYesYes Cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessiveWu et al. 2006 Daughter of 610356.2...
610356.3Saudi ArabiaUnknownNo Retinal dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessivePatel et al. 2016
610356.G.1United Arab Emirates Cone/cone-rod dystrophy; Reduced visual ...NM_133497.4:c.427G>THomozygousAutosomal, RecessiveKhan. 2020; Georgiou et al. 2021 Group of 7 patients ...
610356.G.2United Arab EmiratesYes Cone dystrophyNM_133497.4:c.427G>T, NM_133497.4:c.564G>CHeterozygousAutosomal, RecessiveWu et al. 2006 Unknown number of me...
610356.G.3United Arab EmiratesYes Blurred vision; Nyctalopia; Retinal dyst...NM_133497.4:c.427G>THomozygousAutosomal, RecessiveKhan et al. 2023 Group of 14 patients...
610356.G.4Saudi ArabiaUnknownYes Rod-cone dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessivePatel et al. 2016 Family with unknown ...
610356.G.5Saudi ArabiaUnknownNo Cone/cone-rod dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessivePatel et al. 2016 Family with unknown ...
610356.G.6Saudi ArabiaUnknownNo Cone/cone-rod dystrophyNM_133497.4:c.427G>THomozygousAutosomal, RecessivePatel et al. 2016 Family with unknown ...
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