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Yamanari M, Tsuda S, Kokubun T, Shiga Y, Omodaka K, Yokoyama Y, Himori N, Ryu M, Kunimatsu-Sanuki S, Takahashi H, Maruyama K, Kunikata H, Nakazawa T. Fiber-based polarization-sensitive OCT for birefringence imaging of the anterior eye segment. BIOMEDICAL OPTICS EXPRESS 2015; 6:369-89. [PMID: 25780730 PMCID: PMC4354580 DOI: 10.1364/boe.6.000369] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/22/2014] [Accepted: 12/23/2014] [Indexed: 05/21/2023]
Abstract
We demonstrate a prototype system of polarization-sensitive optical coherence tomography (PS-OCT) designed for clinical studies of the anterior eye segment imaging. The system can measure Jones matrices of the sample with depth-multiplexing of two orthogonal incident polarizations and polarization-sensitive detection. An optical clock is generated using a quadrature modulator and a logical circuit to double the clock frequency. Systematic artifacts in measured Jones matrices are theoretically analyzed and numerically compensated using signals at the surface of the sample. Local retardation images of filtering blebs after trabeculectomy show improved visualization of subconjunctival tissue, sclera, and scar tissue of the bleb wall in the anterior eye segment.
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Affiliation(s)
- Masahiro Yamanari
- Engineering Department, Tomey Corporation, 2-11-33 Noritakeshinmachi, Nishi-ku, Nagoya, Aichi, 451-0051,
Japan
| | - Satoru Tsuda
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Taiki Kokubun
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
- Department of Ophthalmology, Iwaki Kyoritsu Hospital, 16 Kusehara, Uchigo Mimaya-machi, Iwaki, Fukushima 973-8555,
Japan
| | - Yukihiro Shiga
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Kazuko Omodaka
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Yu Yokoyama
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Noriko Himori
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Morin Ryu
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Shiho Kunimatsu-Sanuki
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Hidetoshi Takahashi
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Kazuichi Maruyama
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Hiroshi Kunikata
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
| | - Toru Nakazawa
- Department of Ophthalmology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574,
Japan
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52
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Hong YJ, Makita S, Sugiyama S, Yasuno Y. Optically buffered Jones-matrix-based multifunctional optical coherence tomography with polarization mode dispersion correction. BIOMEDICAL OPTICS EXPRESS 2015; 6:225-43. [PMID: 25657888 PMCID: PMC4317124 DOI: 10.1364/boe.6.000225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/21/2014] [Accepted: 11/21/2014] [Indexed: 05/03/2023]
Abstract
Polarization mode dispersion (PMD) degrades the performance of Jones-matrix-based polarization-sensitive multifunctional optical coherence tomography (JM-OCT). The problem is specially acute for optically buffered JM-OCT, because the long fiber in the optical buffering module induces a large amount of PMD. This paper aims at presenting a method to correct the effect of PMD in JM-OCT. We first mathematically model the PMD in JM-OCT and then derive a method to correct the PMD. This method is a combination of simple hardware modification and subsequent software correction. The hardware modification is introduction of two polarizers which transform the PMD into global complex modulation of Jones matrix. Subsequently, the software correction demodulates the global modulation. The method is validated with an experimentally obtained point spread function with a mirror sample, as well as by in vivo measurement of a human retina.
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Affiliation(s)
- Young-Joo Hong
- Computational Optics Group, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki,
Japan
- Computational Optics and Ophthalmology Group, Tsukuba,
Japan
| | - Shuichi Makita
- Computational Optics Group, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki,
Japan
- Computational Optics and Ophthalmology Group, Tsukuba,
Japan
| | - Satoshi Sugiyama
- Computational Optics Group, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki,
Japan
- Tomey Corporation, Nagoya, Aichi,
Japan
- Computational Optics and Ophthalmology Group, Tsukuba,
Japan
| | - Yoshiaki Yasuno
- Computational Optics Group, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki,
Japan
- Computational Optics and Ophthalmology Group, Tsukuba,
Japan
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