Einflüsse des orbitalen venendrucks auf die augendruckregulation und die augendurchblutung

Translated title of the contribution: Effects of orbital venous pressure on intraocular pressure and ocular blood flow

Herbert A. Reitsamer, J. W. Kiel

Research output: Contribution to journalArticlepeer-review

Abstract

The goal of this work is to characterize the relationship between the orbital venous pressure (OVP) and ocular hemo- and hydrodynamics. Continuous measurements of OVP, episcleral venous pressure (EVP), arterial pressure (MAP), intraocular pressure (IOP) and choroidal blood flow (ChorFlux) were performed in anesthetized rabbits while blood pressure was manipulated mechanically. The measurements revealed linear relationships between OVP/IOP, OVP/ EVP and IOP/EVP. Venous resistance calculations indicate a passive behavior of the pathway between the intraocular choroidal veins and the orbital venous sinus. The pressure drop of 6 mm Hg from the episcleral veins to the orbital venous sinus at baseline is another significant finding of this study. We conclude that the involvement of the orbital venous pressure in regulatory mechanisms of intraocular pressure and ocular hemodynamics might be important and should be considered in future studies.

Translated title of the contributionEffects of orbital venous pressure on intraocular pressure and ocular blood flow
Original languageGerman
Pages (from-to)230-233
Number of pages4
JournalSpektrum der Augenheilkunde
Volume18
Issue number5
StatePublished - Dec 16 2004

Keywords

  • Autoregulation
  • Episcleral venous pressure
  • Intraocular pressure
  • Laser-Doppler-flowmetry
  • Ocular blood flow
  • Orbital venous pressure

ASJC Scopus subject areas

  • Ophthalmology

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