Chinese Optics Letters, 2018, 16 (3): 031701, Published Online: Jul. 13, 2018
Measurement of ocular axial length using full-range spectral-domain low-coherence interferometry Download: 670次
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.
Yi Wang, Liang Feng, Lida Zhu, Hongxian Zhou, Zhenhe Ma. Measurement of ocular axial length using full-range spectral-domain low-coherence interferometry[J]. Chinese Optics Letters, 2018, 16(3): 031701.