Rare diseases · Sign or symptom
Abnormal pattern electroretinogram
HP:0030467
What it means
An anomalous response to a pattern electroretinogram (PERG), a particular kind of ERG obtained in response to contrast modulation of patterned visual stimuli at constant mean luminance-typically contrast-reversing gratings or checkerboards-whose characteristics are fundamentally different from those of the traditional ERG in response to diffuse flashes of light.
Part of the broader category
Abnormal pattern electroretinogram
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.