Fiber probe design for needle tip depth sensing in subretinal injection surgery based on SD-OCT

Zheng Yan, Yong Huang*, Yin Liu, Xiaochen Li, Zhengyu Qiao, Qun Hao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

At present, there have been many studies using OCT technology to assist subretinal injection surgery. One of the research directions is to perceive the depth of needle penetration by collecting A-Line signal of tissue in real time. Most of the OCT systems in such solutions use a common optical path architecture, which basically does not require dispersion compensation, and the structure is simple, but the working distance is fixed. In this paper, a needle tip depth sensing SD-OCT system was developed. Two types of ball lens fiber probes emitting quasi-parallel light were designed for use in air and water. The ball lens fiber probe used in water was fabricated. A probe, called a single-mode fiber probe, was manufactured by cutting the light emitting surface of a single-mode fiber using a fiber cleaver. Under the same conditions, in the water, the A-Line signal of the mirror collected by the SD-OCT system integrated with the ball lens fiber probe used in the water is stronger than that collected by the SD-OCT system integrated with the single-mode fiber probe. When collecting the A-Line signal of the mirror in water, the SD-OCT system integrated with the ball lens fiber probe used in the water has a longer working distance than the CP-SDOCT system integrated with the single-mode fiber probe. Finally, the needle tip depth sensing function of the system was tested through experiments.

Original languageEnglish
Title of host publicationAOPC 2024
Subtitle of host publicationBiomedical Optics
EditorsXiaodong Zhang
PublisherSPIE
ISBN (Electronic)9781510687950
DOIs
Publication statusPublished - 2024
Event2024 Applied Optics and Photonics China: Biomedical Optics, AOPC 2024 - Beijing, China
Duration: 23 Jul 202426 Jul 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13503
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2024 Applied Optics and Photonics China: Biomedical Optics, AOPC 2024
Country/TerritoryChina
CityBeijing
Period23/07/2426/07/24

Keywords

  • depth perception
  • optical coherence tomography
  • optical fiber probe
  • subretinal injection surgery

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Cite this

Yan, Z., Huang, Y., Liu, Y., Li, X., Qiao, Z., & Hao, Q. (2024). Fiber probe design for needle tip depth sensing in subretinal injection surgery based on SD-OCT. In X. Zhang (Ed.), AOPC 2024: Biomedical Optics Article 1350304 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13503). SPIE. https://doi.org/10.1117/12.3046414