P 272
Examination of the retinal capillary blood flow in patients with branch vein occlusionH. Remsch, G. K. Lang, G. E. Lang
Introduction: Purpose of this prospective clinical study is to investigate changes of retinal capillary blood flow in patients with branch retinal vein occlusion (BRVO).
Methods: In 11 eyes of 11 patients with temporal BRVO retinal capillary blood volume (VOL), blood flow (FLOW) and velocity (VEL) were measured using the Heidelberg Retinal Flowmeter (HRF). The measurement windows were located in the area affected by vein occlusion, in the corresponding area of the contralateral temporal branch vein in the same eye and in equivalent regions in the eyes of 11 age- and sex-matched controls. The exact Wilcoxon-test for matched pairs was used for statistical analysis.
Results: Compared to the controls (VOL = 15.06 ± 3.12; FLOW = 341 ± 67; VEL = 1.29 ± 0.2) the parameters VOL (11.44 ± 2.51 / p = 0.02), FLOW (259 ± 70 / p = 0.004) and VEL (1.02 ± 0.34 / p = 0.02) were significantly lower in the sectors affected by BRVO. In the contralateral area VOL (17.69 ± 3.3), FLOW (394 ± 61) and VEL (1.59 ± 0.4) were significantly higher compared to the control group (VOL = 14.56 ± 2.81 / p = 0.03; FLOW = 309 ± 73 / p = 0.01; VEL = 1.27 ± 0.37 / p = 0.01).< /FONT >
Discussion: In patients with temporal BRVO HRF-measurements of retinal capillary perfusion parameters indicate a decreased retinal capillary blood flow in the affected area and an increased retinal capillary blood flow in the area of the contralateral vein in the same eye.
Support: Rudolf and Clothilde Eberhard Foundation
Universität Ulm,
Augenklinik und Poliklinik, Prittwitzstr. 43, D 89070
Ulm