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25 February 2008 Frequency encoded optical assessment of human retinal physiology
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Proceedings Volume 6844, Ophthalmic Technologies XVIII; 68440I (2008) https://doi.org/10.1117/12.764330
Event: SPIE BiOS, 2008, San Jose, California, United States
Abstract
We demonstrate in-vivo functional imaging of the human retina with Fourier domain optical coherence tomography employing frequency encoding of an excitation pattern. The principle is based on projecting a modulated rectangular pattern across the foveal region and acquiring a time series of B-Scans at the same vertical position across the pattern. The idea is to modulate the excitation with a frequency that is distinct from the heartbeat and irregular motion artifacts. Fourier analysis of the time series at each transverse position in the B-scan series allows assessing the retinal response as change in the FDOCT reflectivity signal exactly at the pattern modulation frequency. We observe a change in retinal reflectivity within the region of the outer segment photoreceptor layer exactly at the pattern modulation frequency.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rainer A. Leitgeb, Roland Michaely, Adrian Bachmann, Theo Lassner, and Cedric Blatter "Frequency encoded optical assessment of human retinal physiology", Proc. SPIE 6844, Ophthalmic Technologies XVIII, 68440I (25 February 2008); https://doi.org/10.1117/12.764330
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