Chinese Optics Letters, Volume. 17, Issue 4, 041701(2019)
Spectral domain optical coherence tomography with sub-micrometer sensitivity for measurement of central corneal thickness
Figures & Tables(5)
Fig. 1. Schematic of SD-OCT system. SLD, superluminescent diode; Cir, circulator; CP, coupler; GS, galvo scanner; BS, beam splitter; AC, area scan CCD; LC, line scan CCD;
Fig. 2. Calculation of phase wrapping order. Acquired interference fringe (a) before and (b) after band-pass filtering and normalization. (c) Correlations between detected and simulated fringes. (d) Comparison of detected fringes with simulated fringes.
Fig. 3. (a) Red line depicts the wrapped result calculated by FFT; the result by applying digital unwrapping is shown as the black line, and the blue line shows the result by the proposed method. (b) Histogram of thickness variances of a coverslip.
Fig. 4. (a) Cross-section image of cornea. (b) A-scan profile of central cornea at the meridian.
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Lida Zhu, Yi Wang, Yi Yuan, Hongxian Zhou, Yuqian Zhao, Zhenhe Ma, "Spectral domain optical coherence tomography with sub-micrometer sensitivity for measurement of central corneal thickness," Chin. Opt. Lett. 17, 041701 (2019)
Paper Information
Category: Medical optics and biotechnology
Received: Oct. 31, 2018
Accepted: Jan. 10, 2019
Posted: Jan. 17, 2019
Published Online: Apr. 3, 2019
The Author Email: Yi Wang (wangyi@neuq.edu.cn)
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