Pressure-flow relationship using the categorized ocular perfusion pressure (OPP)–retinal flow volume in arteries (RFV<sub>ART</sub>, upper panel) and retinal flow volume in veins (RFV<sub>VEIN</sub>, during isometric exercise.

<p>Relative data were sorted into 9 groups consisting of 18 individual values according to ascending OPP values. The means and the 95% confidence intervals are shown (n = 27). Asterisks indicate significant increase from baseline blood flow values.</p>