Ophthalmological OCT measuring arm design

Xiaonan Xu; Jiansong Gao; Jihua Guo; Ping Xue

doi:10.1117/12.470496

14 June 2002 Ophthalmological OCT measuring arm design

Xiaonan Xu, Jiansong Gao, Jihua Guo, Ping Xue

Proceedings Volume 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI; (2002) https://doi.org/10.1117/12.470496
Event: International Symposium on Biomedical Optics, 2002, San Jose, CA, United States

Abstract

This paper presents a novel ophthamological optical coherence tomography detecting instrument that we design and introduces measuring arm emphatically. For the glaucoma is very common in the orient, this system can achieve both the eyeground detection and the canthus detection. And it combines the cranny lamp's conventional detection with optical coherence tomography. In order to gain the best resolution and the largest scanning range in the OCT detection, we find the optical system should obey these principles in the measuring arm design: (i) the parallel light from the collimator goes through the lens and focuses on the slot of the cranny lamp. The movement of the scanning point produced by the scanner is carrying on along the slot. (Ii) In the whole light route, the scanner images on the laser object lens of the OCT. The center light of the infrared goes through the center of the object lens all the time. Considering all the system, this design has a longitudinal resolution of 15micrometers , and a transverse resolution of 20micrometers at imaging velocity of 4 frames per second.

Citation Download Citation

Xiaonan Xu, Jiansong Gao, Jihua Guo, and Ping Xue "Ophthalmological OCT measuring arm design", Proc. SPIE 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI, (14 June 2002); https://doi.org/10.1117/12.470496

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