Ultrawide-field retinal OCTA using a stretched-pulse mode locking laser

Sunhong Jeong; ByungKun Lee; Joosung Lee; Myeongsik Choi; Tae Shik Kim; Benjamin J. Vakoc; Wang-Yuhl Oh

doi:10.1117/12.3001342

13 March 2024 Ultrawide-field retinal OCTA using a stretched-pulse mode locking laser

Sunhong Jeong, ByungKun Lee, Joosung Lee, Myeongsik Choi, Tae Shik Kim, Benjamin J. Vakoc, Wang-Yuhl Oh

Proceedings Volume PC12824, Ophthalmic Technologies XXXIV; PC1282409 (2024) https://doi.org/10.1117/12.3001342
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

The demand for widefield OCTA is growing as many retinal diseases exhibit alterations in the peripheral microvascular network at the early stage. In this work, we demonstrate ultrawide-field retinal OCTA over the area spanning 20 mm in diameter in 5 seconds using a 4.74 MHz A-line rate stretched-pulse mode locking (SPML)-OCT system. A concentric-circular scanning with an automatic reference arm length adjustment enabled a wide-field and large-curvature retina imaging within a 2 GHz signal bandwidth. The automatic focal plane adjustment and the deep learning-based denoising were also utilized to enhance vessel visualization in ultrawide-field OCTA images.

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Citation Download Citation

Sunhong Jeong, ByungKun Lee, Joosung Lee, Myeongsik Choi, Tae Shik Kim, Benjamin J. Vakoc, and Wang-Yuhl Oh "Ultrawide-field retinal OCTA using a stretched-pulse mode locking laser", Proc. SPIE PC12824, Ophthalmic Technologies XXXIV, PC1282409 (13 March 2024); https://doi.org/10.1117/12.3001342

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