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Chin. Opt. Lett.
 Home  List of Issues    Issue 03 , Vol. 16 , 2018    10.3788/COL201816.031701


Measurement of ocular axial length using full-range spectral-domain low-coherence interferometry
Yi Wang1, Liang Feng1, Lida Zhu2, Hongxian Zhou1, and Zhenhe Ma1
1 School of Control Engineering, [Northeastern University at Qinhuangdao], Qinhuangdao 066004, China
2 School of Electrical Engineering, [Yanshan University], Qinhuangdao 066004, China

Chin. Opt. Lett., 2018, 16(03): pp.031701

DOI:10.3788/COL201816.031701
Topic:Medical optics and biotechnology
Keywords(OCIS Code): 170.4500  170.4460  120.3180  

Abstract
We demonstrate a system for measuring the ocular axial length (AL) with high sensitivity and high speed using spectral-domain low-coherence interferometry (SD-LCI). To address the limit in measuring such a large range by using SD-LCI, we propose a full-range method to recognize the positive and negative depths. The reference arm length is changed synchronously with the shift of the focal point of the probing beam. The system provides a composite depth range that is sufficient to cover the whole eye. We demonstrate the performance of the presented system by measuring the ALs of five volunteers. This system can provide the A-scan ocular biometric assessment of the corneal thickness and AL in 0.1 s.

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Received:2017/10/25
Accepted:2018/1/4
Posted online:2018/3/2

Get Citation: Yi Wang, Liang Feng, Lida Zhu, Hongxian Zhou, and Zhenhe Ma, "Measurement of ocular axial length using full-range spectral-domain low-coherence interferometry," Chin. Opt. Lett. 16(03), 031701(2018)

Note: This research was supported in part by the National Natural Science Foundation of China (NSFC) (Nos. 61275214, 31170956, and 61771119), and the Hebei Provincial Natural Science Foundation of China (Nos. A2015501065 and H2015501133).



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