Anmeldung zur Tagung
Registration
Grußwort
Invitation
Themen
Topics
Allgemeiner Ablauf
General overview
Wissenschaftliches Programm
Scientific program
Kurse
Courses
Symposien
Symposiums
Frühstück mit Spezialisten
Breakfast with specialists
Arzthelferinnen-Fortbildung
Rahmenprogramm
Social program
DOG Information
DOG Information
Allgemeine Informationen
General Information
Autorenindex
Index of Authors
Ausstellerliste
Exhibitors
Sponsoren
Sponsors
Teilnahmegebühren
Registration fees
Impressum
Reproducibility measurements of the retrobulban vessel system with color Doppler imaging
Matthiessen E., Klemm M., Walter A., Danias S.
University Eye Hospital Hamburg, Martinistr. 52, D - 20246 Hamburg
Objective: It is surmised, that a changed glaucomatic function
loss, besides other factors for e.g. a higher intraocular pressure, is
also caused by a changed haemodynamic of the retrobulban vessel system.
This could be proved by various studies in which patients with glaucoma
had a changed retrobulban blood velocity. During the study reproductive
measurements should be performed for the establishment of the color Doppler
imaging, which is used to measure the retrobulban vessel perfusion.
Patients and methods: One eye each of 22 patients from 6 different
age groups (18-74 years, Median 47 years) were examined. During this study
the Visus, the intraocular tension, the pulse and the blood pressure were
although examined. Using a color Doppler imaging, type Siemens Sololine
Elegra®with a combined soundhead (7.5L40), the arteria opthalmica,
the arteriae ciliares breves and the arteriae ciliares longes of each
patient were measured 6 times. Each measurement could be documented digitally
by this apparatus. The reproducibility measurements were evaluated by
the calculation of the intraclasscoefficient. The age correlation was
discovered by the calculation of the Spearman-Rank-correlation coefficient.
For the reproducibility measurements the pulse amplitude, end diastolic
velocity, maximum systolic velocity and the resistance of the vessels
(RI-Resistance Index) of the arteriae ciliares and the arteria opthalmica
were evaluated.
Results: The intraindividual measurements reflects a good reproducibility
of the above mentioned indicators. The intraclasscoefficient of the arteria
opthalmica were 0.92, the arteriae ciliares longes 0.88 and the arteriae
ciliares breves 0.82. The age correlated increase of the vessel resistance
could not be proved by the measured vessels (p>0.05).
Conclusions: The color Doppler imaging is a suitable process for
the reflection of the retrobulban blood flow condition. The significant
reproductive results are the presupposition for the use of the color Doppler
imaging in the glaucoma diagnostics as well as in therapy studies.