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obophenotype / human-phenotype-ontology

Ontology for the description of human clinical features
http://obophenotype.github.io/human-phenotype-ontology/
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Optic disc excavation #7635

Closed pnrobinson closed 9 months ago

pnrobinson commented 2 years ago

Preferred term label: Optic disc excavation -- what is the relation to Increased cup-to-disc ratio HP:0012796

Synonyms Excavation of optic discs

Definition (free text, please give PubMed ID)

Parent term (use hpo.jax.org/app)

Diseases characterized by this term ? (e.g. Orphanet or OMIM number) 615722

PMID: 24462372 3/6

Your nano-attribution (ORCID)

pnrobinson commented 2 years ago

@sukram Should there be a term Optic disc excavation or is this synonymous with Increased cup-to-disc ratio ?

Sukramg commented 2 years ago

The cup-to-disc ratio describes the extent of optic nerve excavation. In clinical parlance, cup-to-disc up to 0.6 is normal, 1.0 means complete cup-to-disc with virtually no nerve fiber fringe. Usually, the ratio is estimated by the examiner at the slit lamp and varies greatly from examiner to examiner. More accurate is the optical coherence tomography, as it is used for example for the follow-up of glaucoma. I consider a graduation of the cup from 0 to 1.2 (vase-shaped cup) in 0.1 steps as a useful addition.

pnrobinson commented 9 months ago

@Sukramg -- we now have these terms https://hpo.jax.org/app/browse/term/HP:0031973 I will add Optic disc excavation as a synonym -- please contact me if this in incorrect!