title: Vitreous hemorrhage from a persistent hyaloid artery.
abstract: A 14-year-old girl developed spontaneous vitreous hemorrhage from the free end of a partially regressed hyaloid artery. Fluorescein angiography confirmed the hemorrhage was from the retinal arterial rather than venous circulation. The vessel became a fibrosed, occluded, and semitransparent thread after 20 months of follow-up evaluation. It was postulated that the rapid eye movement (REM) phase during sleep may create a tractional force and leads to rupture of the freely floating hyaloid artery. A patent persistent hyaloid artery should be included in the list of the causes of vitreous hemorrhage, especially in healthy young people.
authors.affiliation: Department of Ophthalmology, Chang Gung Memorial Hospital, Taipei, Taiwan.
authors.forename: T L
authors.initials: TL
authors.lastname: Chen
authors.forename: S S
authors.initials: SS
authors.lastname: Yarng
mesh_terms: D000293:Adolescent; D001158:Arteries / Q000002:abnormalities; D005260:Female; D005355:Fibrosis; D005451:Fluorescein Angiography; D006801:Humans; D007908:Lens, Crystalline / Q000098:blood supply; D014822:Vitreous Body / Q000098:blood supply*; D014823:Vitreous Hemorrhage / Q000209:etiology*