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Items: 3

1.

Remnants of the hyaloid vascular system

MedGen UID:
339474
Concept ID:
C1846267
Finding
2.

Persistent hyperplastic primary vitreous

Persistence of the hyaloid artery, which is the embryonic artery that runs from the optic disk to the posterior lens capsule may persist; the site of attachment may form an opacity. The hyaloid artery is a branch of the ophthalmic artery, and usually regresses completely before birth. This features results from a failure of regression of the hyaloid vessel, which supplies the primary vitreous during embryogenesis and normally regresses in the third trimester of pregnancy, leading to a particular form of posterior cataract. [from HPO]

MedGen UID:
120583
Concept ID:
C0266568
Congenital Abnormality
3.

Exudative retinopathy

NDP-related retinopathies are characterized by a spectrum of fibrous and vascular changes of the retina at birth that progress through childhood or adolescence to cause varying degrees of visual impairment. The most severe phenotype is described as Norrie disease (ND), characterized by greyish yellow fibrovascular masses (pseudogliomas) secondary to retinal vascular dysgenesis and detachment. Congenital blindness is almost always present. Approximately 30%-50% of males with ND have developmental delay/intellectual disability, behavioral abnormalities, or psychotic-like features. The majority of males with ND develop sensorineural hearing loss. Less severe phenotypes include: persistent hyperplastic primary vitreous (PHPV), characterized by a fibrotic white stalk from the optic disk to the lens; X-linked familial exudative vitreoretinopathy (XL-FEVR), characterized by peripheral retinal vascular anomalies with or without fibrotic changes and retinal detachment; retinopathy of prematurity (ROP); and Coats disease, an exudative proliferative vasculopathy. Phenotypes can vary within families. [from GeneReviews]

MedGen UID:
102319
Concept ID:
C0154832
Congenital Abnormality; Disease or Syndrome
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