Abstract
Based on results from measurements of arterial blood velocity, arterial and
venous diameters of major segmental retinal vessels in normal persons and in
patients with venous occlusive diseases and in continuation of the two preceding
parts of this series of articles, further possibilities for the differential
diagnosis of measurements of retinal microcirculation magnitudes are discussed.
Whereas the measurement of blood velocity is an important criterion for the
assessment of the stasis conditions and the arterial involvement in an occlusive
disease, the diameters of the vessels offer essential suggestions to local
regulative processes. In this connection, a dependence on pH of the contraction
state of the smooth vascular musculature detected in porcine coronary arteries is
presented. By its transmission to the arterial retinal vessels, it is possible to
unequivocally clarify the local regulative and pathological behavior of arterial
retinal vessels in terms of flow physiology.
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