Remnants of the hyaloid vascular system Vascular remnant arising from the disk 2009-05-02T06:43:07Z UMLS:C4024160 Persistence of the hyaloid artery HP:0009922 Persistent hyaloid artery Persistence of the hyaloid artery, which is the embryonic artery that runs from the optic disc 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.