title: [Estimation of ocular perfusion: a practical oriented comparison of different methods].
abstract: BACKGROUND
  Ocular haemodynamics play a prominent part in many ocular diseases. This leads to the need to determine ocular perfusion. Several studies reveal advantages of colour Doppler imaging (CDI) in ophthalmologic diagnostics. Little is known about correlation of CDI results with other methods.
  
  
  METHODS
  N = 56 eyes were examined with CDI, laser Doppler flowmetry (LDF) and Langham-OBF (LOBF). Correlations between the methods were identified by the Spearman correlation coefficient (R).
  
  
  RESULTS
  LDF correlated with time average maximum (TAMx) and mean (TAMn) velocity assessed by CDI in the long posterior ciliary artery (TAMx: R = 0.466, p = 0.038, n = 20; TAMn: R = 0.462; p = 0.040, n = 20), but not in the short posterior ciliary artery. LOBF correlated with pulsatility index (PI) and resistive index (RI) of CDI in short (PI: R = 0.514, p = 0.002, n = 35; RI: R = 0.438, p = 0.008, n = 35) and long posterior ciliary arteries (PI: R = 0.436, p = 0.009, n = 35; RI: R = 0.506, p = 0.002, n = 35).
  
  
  CONCLUSIONS
  Methods strengthen each other by partial correlation. CDI allows a more detailed insight into ocular perfusion than the other methods.
authors.affiliation: Universitätsklinikum Hamburg-Eppendorf, Klinik und Poliklinik für Augenheilkunde, Hamburg.
authors.forename: Maren
authors.initials: M
authors.lastname: Klemm
authors.forename: Oliver
authors.initials: O
authors.lastname: Zeitz
authors.forename: Eike T
authors.initials: ET
authors.lastname: Matthiessen
authors.forename: Juliane
authors.initials: J
authors.lastname: Reuss
authors.forename: Gisbert
authors.initials: G
authors.lastname: Richard
mesh_terms: D001783:Blood Flow Velocity / Q000502:physiology; D002829:Choroid / Q000098:blood supply / Q000000981:diagnostic imaging; D019842:Ciliary Arteries / Q000000981:diagnostic imaging; D005123:Eye / Q000098:blood supply* / Q000000981:diagnostic imaging; D005901:Glaucoma / Q000000981:diagnostic imaging; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D007511:Ischemia / Q000000981:diagnostic imaging*; D017078:Laser-Doppler Flowmetry; D018917:Optic Neuropathy, Ischemic / Q000000981:diagnostic imaging; D012016:Reference Values; D012039:Regional Blood Flow / Q000502:physiology; D012212:Rheology; D012680:Sensitivity and Specificity; D018615:Ultrasonography, Doppler, Color; D014655:Vascular Resistance / Q000502:physiology
vernacular_title: Abschätzung der okulären Perfusion: Ein praxisorientierter Vergleich aktueller Methoden.