Empirical retinal venous pulse wave velocity using modified photoplethysmography

Anmar Abdul-Rahman, William Morgan, Aleksandar Vukmirovic, Andrew Mehnert, Danail Obreschow, Dao Yi Yu

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

OBJECTIVE: Using the novel imaging method of high-speed modified photoplethysmography we measured the retinal venous pulse wave velocity in a single case. RESULTS: A healthy 30-year-old subject underwent high-speed modified photoplethysmography (120 frames per second) with simultaneous ophthalmodynamometry at 26 Meditron units. A video of the optic nerve was analyzed using custom software. A harmonic regression model was fitted to each pixel in the time series and used to quantify the retinal vascular pulse wave parameters. Retinal venous pulsation at the optic disc was observed as a complex dynamic wall motion, whereas contraction commenced at a point in the vein at the center of the optic disc, and progressed centrifugally. The empirically estimated retinal venous pulse wave velocity at this segment was approximately 22.24694 mm/s. This measurement provides an estimate for future studies in the field.

Original languageEnglish
Article number48
Pages (from-to)48
Number of pages1
JournalBMC Research Notes
Volume16
Issue number1
DOIs
Publication statusPublished - Dec 2023

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