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We report on new findings to which the observation of vascular dynamics using full-field swept-source OCT with a large field of view has led. In addition to the pulsatile expansions already known from previous measurements, pulsatile contractions of the retina were observed. These may be explained by a longitudinal expansion of retinal arteries. The motion of vessels is actually much more irregular than previously assumed, which renders the determination of pulse wave velocities challenging. Whether these irregularities and their transmission to the tissue can be associated with a clinically relevant biomechanical parameter needs to be clarified by further investigations.
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Hendrik Spahr, Lisa Kutzner, Clara Pfäffle, Leo Puyó, Gereon Hüttmann, Dierck Hillmann, "Retinal vascular dynamics investigated by full-field swept-source optical coherence tomography," Proc. SPIE PC11948, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVI, PC1194801 (7 March 2022); https://doi.org/10.1117/12.2613094