Spiral scanning for improved fixation in confocal scanning laser ophthalmoscopy

Franklin Wei; Kristen Hagan; Claire Y. Li; Anthony N. Kuo; Joseph A. Izatt; Al-Hafeez Z. Dhalla

doi:10.1117/12.2649733

17 March 2023 Spiral scanning for improved fixation in confocal scanning laser ophthalmoscopy

Franklin Wei, Kristen Hagan, Claire Y. Li, Anthony N. Kuo, Joseph A. Izatt, Al-Hafeez Z. Dhalla

Proceedings Volume PC12360, Ophthalmic Technologies XXXIII; PC123600X (2023) https://doi.org/10.1117/12.2649733
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Most point-scanning retinal imaging modalities use raster scan patterns, which can appear in the subject’s vision as a rapidly moving line and cause subject eye motion, resulting in motion artifacts that require a dedicated fixation target to mitigate. In our recent development of a spiral-scanning confocal scanning laser ophthalmoscope, we noticed that the spiral scan pattern is visible to the subject as a bullseye-like shape and hypothesized that it could function as a virtual fixation target. A pilot study confirms this hypothesis by showing that images acquired with spiral scan show less eye motion than images acquired with raster scan.

Conference Presentation

Citation Download Citation

Franklin Wei, Kristen Hagan, Claire Y. Li, Anthony N. Kuo, Joseph A. Izatt, and Al-Hafeez Z. Dhalla "Spiral scanning for improved fixation in confocal scanning laser ophthalmoscopy", Proc. SPIE PC12360, Ophthalmic Technologies XXXIII, PC123600X (17 March 2023); https://doi.org/10.1117/12.2649733

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