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Tomczewski, Sławomir, 2025, "Chirped flicker optoretinography for in vivo characterization of human photoreceptors’ frequency response to light", https://doi.org/10.18150/PAT2JC, RepOD, V1
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Flicker electroretinography (ERG) has served as a valuable noninvasive objective tool for investigating retinal physiological function through the measurement of electrical signals originating from retinal neurons in response to temporally modulated light stimulation. Deficits in the response at certain frequencies can be used as effective biomarkers of cone-pathway dysfunction. In this Letter, we present the progress we made on its optical counterpart—photopic flicker optoretinography (f-ORG). Specifically, we focus on the measurement of the response of light-adapted retinal photoreceptors to a flicker stimulus with chirped frequency modulation. In contrast to measurements performed at discrete frequencies, this technique enables a significantly accelerated characterization of photoreceptor outer segment optical path length modulation amplitudes in the nanometer range as a function of stimulus frequency, enabling the acquisition of the characteristic frequency response in less than 2 sec.
Optoretinography, OCT, photoreceptors
Sławomir Tomczewski, Piotr Węgrzyn, Maciej Wojtkowski, and Andrea Curatolo, "Chirped flicker optoretinography for in vivo characterization of human photoreceptors’ frequency response to light," Opt. Lett. 49, 2461-2464 (2024) https://opg.optica.org/ol/fulltext.cfm?uri=ol-49-9-2461&id=549471 doi: https://doi.org/10.1364/OL.514637
CC BY - Creative Commons Attribution 4.0
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