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Compensation of ocular refractive error is essential for obtaining high-quality OCT/OCTA retinal images for retinal diagnostics across patients with different refractive power. During point-of-care ophthalmic imaging with handheld OCT systems, the clinical ergonomics of operator-driven focal adjustments to accommodate refractive error can disrupt clinical workflow. Here, we present a closed-loop automated hands-free focus tracking method to overcome limitations of conventional manual focus adjustment, and demonstrate its performance when integrated with our handheld spectrally encoded coherence tomography and reflectometry (HH-SECTR) probe. We predict automated focus tracking will improve clinical ergonomics for more efficient point-of-care ophthalmic imaging.
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Jacob J. Watson, Rachel Hecht, Eric M. Tang, Samantha Morganti, Yuankai K Tao, "Automated hands-free focus tracking and z-tracking for point-of-care ophthalmic OCT," Proc. SPIE PC12824, Ophthalmic Technologies XXXIV, PC1282416 (13 March 2024); https://doi.org/10.1117/12.3000419