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9 March 2020 In-vivo demonstration of AO-OCT with a 3-sided pyramid wavefront sensor (Conference Presentation)
Elisabeth F. Brunner, Iuliia Shatokhina, Muhammad Faizan Shirazi, Wolfgang Drexler, Christoph K. F. Hitzenberger, Rainer A. Leitgeb, Ronny Ramlau, Michael Pircher
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Proceedings Volume 11218, Ophthalmic Technologies XXX; 112180R (2020) https://doi.org/10.1117/12.2549506
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
An adaptive optics optical coherence tomography (AO-OCT) system with a 3-sided pyramid wavefront sensor (P-WFS) is presented. Compared to the Shack-Hartmann WFS, the P-WFS promises better sensitivity in low-light scenarios and greater flexibility in pupil sampling. Key feature of the presented set-up is that part of the imaging light is used to illuminate the WFS. The double pass enables closed loop correction without beam modulation and speckle patterns in the sensor read-out are averaged out during scanning. The developed instrument is demonstrated with retinal images obtained in-vivo, where the cone mosaic is clearly visualized at ~4° eccentricity from the fovea.
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Elisabeth F. Brunner, Iuliia Shatokhina, Muhammad Faizan Shirazi, Wolfgang Drexler, Christoph K. F. Hitzenberger, Rainer A. Leitgeb, Ronny Ramlau, and Michael Pircher "In-vivo demonstration of AO-OCT with a 3-sided pyramid wavefront sensor (Conference Presentation)", Proc. SPIE 11218, Ophthalmic Technologies XXX, 112180R (9 March 2020); https://doi.org/10.1117/12.2549506
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KEYWORDS
Adaptive optics optical coherence tomography
Wavefront sensors
In vivo imaging
Adaptive optics
Cones
Modulation
Retina
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