cone dystrophy cone dystrophy with supernormal rod response https://www.malacards.org/card/retinal_cone_dystrophy_3b GARD:0010649 Orphanet:209932 SCTID:719455002 https://github.com/monarch-initiative/mondo/issues/7923 cone dystrophy with supernormal rod response retinal cone dystrophy 3B cone dystrophy with night blindness and supernormal rod responses KCNV2 related cone dystrophy with supernormal scotopic electroretinogram RCD3B cone dystrophy with supernormal rod electroretinogram MEDGEN:332081 icd11.foundation:545671557 MONDO:0012475 cone dystrophy with supernormal rod ERG OMIM:610356 MESH:C563678 DOID:0081022 UMLS:C1835897 Cone dystrophy with supernormal rod response (CDSRR) is an inherited retinopathy, with an onset in the first or second decade of life, characterized by poor visual acuity (due to central scotoma), photophobia, severe dyschromatopsia, and occasionally, nystagmus. Night blindness usually develops later in the course of the disease, but it can also be apparent from childhood. A hallmark of CDSRR is the decreased and delayed dark-adapted response to dim flashes in electroretinographic recordings, which contrasts with the supernormal b-wave response at the highest levels of stimulation. retinal cone dystrophy type 3B KCNV2-related retinopathy