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17 March 2023 Enhanced visualization of the lamina cribrosa by spectral bandwidth alteration in OCT
Danielle J. Harper, Yong-Chul Yoon, Benjamin J. Vakoc
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Proceedings Volume PC12360, Ophthalmic Technologies XXXIII; PC123600S (2023) https://doi.org/10.1117/12.2651461
Event: SPIE BiOS, 2023, San Francisco, California, United States
Abstract
The signal-to-noise ratio of an optical coherence tomography system is inversely proportional to the spectral bandwidth of its input light source. In this work, we have modified a conventional 1 μm swept-source retinal imaging system to have two input laser states to exploit this trade-off. The states have constant average power but are concentrated over two wavelength ranges - one with a 75 nm bandwidth (optimized for high-resolution imaging of the retina) and a second with a 25 nm bandwidth (favoring increased penetration depth in the choroid, sclera and lamina cribrosa.) A fusion of the data from these two modes provides enhanced images of the whole posterior eye.
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Danielle J. Harper, Yong-Chul Yoon, and Benjamin J. Vakoc "Enhanced visualization of the lamina cribrosa by spectral bandwidth alteration in OCT", Proc. SPIE PC12360, Ophthalmic Technologies XXXIII, PC123600S (17 March 2023); https://doi.org/10.1117/12.2651461
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KEYWORDS
Optical coherence tomography
Visualization
Image fusion
Data fusion
Eye
Fiber lasers
Imaging systems
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