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Impressum
Correlation between retrobulbar color Doppler imaging and laser Doppler flowmetry in the choroid or the optic nerve head of patients with primary open angle glaucoma
Vogten H., Orgül S., Gugleta K., Flammer J.
University Eye Clinic Basel
Background: Evaluation of the relavance of retrobulbar blood flow
velocity measurements for blood flow in optic nerve head or the choroid
in glaucoma.
Patients and Methods: Blood flow velocity in the central retinal
artery and in the optic nerve head and the choroid were measured in 78
primary openangle glaucoma patients by means of color Doppler imaging
and laser Doppler flowmetry respectively. The results obtained with both
methods were correlated seperately for each eye by means of parametric
and nonparametric tests.
Study design: Prospective clinical study.
Results: In both eyes, neither the parametric nor the non-parametric
tests showed a statistically significant correlation between the blood
flow velocity in the central retinal artery and in the capillaries of
the optic nerve head or the choroid.
Conclusion: Although the vascular bed assessed in optic nerve head
and choroid laser Doppler flowmetry is supplied from the central retinal
artery, no conclusions can be driven from color Doppler imaging measurements
for optic nerve head or choroidal blood flow in most glaucoma patients.