Health / Medical Topics

    Immature Retinal Vasculature in Zone 1

    Definition 1

    A finding that indicates the presence of immature retinal vessels in zone 1 of the retina. (NCI Thesaurus)

    Definition 2

    Prior to the development of ROP in the premature infant, vascularization of the retina is incomplete or "immature". Zone I is a circle, the radius of which extends from the center of the optic disc to twice the distance from the center of the optic disc to the center of the macula. (NICHD)




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