Reduced amplitude of dark-adapted bright flash electroretinogram b-wave

Symptom Information:

Symptom ID: HPO:0007984
Synonyms:
Electroretinogram: reduced b-wave amplitude [HPO:0007984]
Reduced rod b-wave (ERG) [HPO:0007984]
Quality:
Cross references:
Is a (Direct Parents):
HPO         Abnormal electroretinogram
Is a (Whole tree): HPO:
All(HPO:0000001)
    Phenotypic abnormality(HPO:0000118)
       Abnormality of the eye(HPO:0000478)
          Abnormal eye morphology(HPO:0012372)
             Abnormality of the globe(HPO:0012374)
                Abnormality of the posterior segment of the globe(HPO:0004329)
                   Abnormality of the fundus(HPO:0001098)
                      Abnormality of the retina(HPO:0000479)
                         Abnormal electroretinogram(HPO:0000512)
                            Reduced amplitude of dark-adapted bright flash electroretinogram b-wave(HPO:0007984)
MedDRA:
Database Frequency: 3 / 7739
Resource:

All diseases associated with this symptom:

NIGHT BLINDNESS, CONGENITAL STATIONARY, TYPE 2B (OMIM:610427)
RETINAL CONE DYSTROPHY 4 (OMIM:610478)
X-linked retinoschisis (Orphanet:792)