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5 March 2021 Digital adaptive optics based on digital lateral shearing of the computed pupil field for flying spot retinal swept source OCT in vivo
Abhishek Kumar, Stefan Georgiev, Matthias Salas, Rainer A. Leitgeb
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Proceedings Volume 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV; 116300B (2021) https://doi.org/10.1117/12.2583682
Event: SPIE BiOS, 2021, Online Only
Abstract
A novel non-iterative digital adaptive optics (DAO) technique is presented in which the wavefront error is calculated using the phase difference between the pupil field and its digital copies translated by a pixel along the horizontal and vertical direction of the defined co-ordinate of the pupil plane. Using this method, a large wavefront error with peak to valley of 20 radians and RMS error of 0.71 waves is detected and corrected in case of a micro-beads phantom sample. Also, human photoreceptor image is recovered from an aberrated retinal OCT acquired at the eccentricity of 2 degrees from fovea in-vivo with a flying spot OCT system using a phase stable akinetic swept source at 1060 nm.
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Abhishek Kumar, Stefan Georgiev, Matthias Salas, and Rainer A. Leitgeb "Digital adaptive optics based on digital lateral shearing of the computed pupil field for flying spot retinal swept source OCT in vivo", Proc. SPIE 11630, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXV, 116300B (5 March 2021); https://doi.org/10.1117/12.2583682
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KEYWORDS
Optical signal processing
Optical coherence tomography
Adaptive optics
In vivo imaging
Error analysis
Wavefronts
Image restoration
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