title: Flow patterns of blood cells in the retinal capillaries. Retinal capillary flow patterns.
abstract: We present a new technique for retinal blood cell angiography which was used to investigate flow patterns of blood cells in the retinal capillary net of normal cats. Capillary paths were defined to be the path taken by the labelled blood cells from the terminal arteriole to the entry point into a collecting venule. We were able to define two types of capillary paths. The 'simple' paths were minimally coiled and had a high blood cell flux. The 'complex' paths were coiled, structurally complex and had a low blood cell flux in comparison to the simple paths of the same eye. A simultaneous fluorescein angiogram was performed to reveal the complete anatomy of the capillary net in which the functional paths exist. The possibility that such flow patterns exist in the human retina should be considered.
authors.affiliation: Lions Eye Institute, University of Western Australia, Nedlands.
authors.forename: J
authors.initials: J
authors.lastname: Ben-nun
authors.forename: V
authors.initials: V
authors.lastname: Alder
authors.forename: D
authors.initials: D
authors.lastname: Thompson
authors.forename: I J
authors.initials: IJ
authors.lastname: Constable
mesh_terms: D000818:Animals; D001773:Blood Cells / Q000502:physiology*; D001783:Blood Flow Velocity; D002196:Capillaries / Q000502:physiology; D002415:Cats; D005451:Fluorescein Angiography / Q000379:methods; D005456:Fluorescent Dyes / Q000008:administration & dosage; D005654:Fundus Oculi; D007091:Image Processing, Computer-Assisted; D009930:Organic Chemicals; D012171:Retinal Vessels / Q000502:physiology*
chemical_list: D005456:Fluorescent Dyes; D009930:Organic Chemicals; C070080:PKH 26