• Infrared and Laser Engineering
  • Vol. 49, Issue 4, 0413006 (2020)
Huaiyu Cai1, Weiqian Zhang1, Xiaoyan Han1, Yi Wang1, Wenguang Chen2, and Xiaodong Chen1
Author Affiliations
  • 1Key Laboratory of Opto-Electronics Information Technology of Ministry of Education, College of Precision Instrument and Opto-Electronic Engineering, Tianjin University, Tianjin 300072, China
  • 2Shanghai Medi Works Precision Instrument Incorporated Company, Shanghai 200237, China
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    DOI: 10.3788/IRLA202049.0413006 Cite this Article
    Huaiyu Cai, Weiqian Zhang, Xiaoyan Han, Yi Wang, Wenguang Chen, Xiaodong Chen. Integrated imaging system of eye axis and anterior segment based on SS-OCT[J]. Infrared and Laser Engineering, 2020, 49(4): 0413006 Copy Citation Text show less
    Fundamental principle and the display of SS-OCT system
    Fig. 1. Fundamental principle and the display of SS-OCT system
    Flow chart of SS-OCT system data processing
    Fig. 2. Flow chart of SS-OCT system data processing
    Schematic diagram of data acquisition sequence
    Fig. 3. Schematic diagram of data acquisition sequence
    Sample's interference spectra before and after spectral reshaping
    Fig. 4. Sample's interference spectra before and after spectral reshaping
    K-trigger signal and signal before and after k-resampling
    Fig. 5. K-trigger signal and signal before and after k-resampling
    Flow chart of image enhancement
    Fig. 6. Flow chart of image enhancement
    Original image and the enhanced results
    Fig. 7. Original image and the enhanced results
    Full-scale eye model measurement result
    Fig. 8. Full-scale eye model measurement result
    MeasurementCCT/mmAD/mmLT/mmVT/mmAL/mm
    Sample size0.333.064.0618.9726.42
    Result without calibration0.353.084.0719.1026.60
    Result after calibration0.323.074.0719.0026.46
    Error value0.010.010.010.030.04
    Table 1. Comparison between the measurement of the parameters of each layer of the eye axis and the actual sample size
    SourceMethodMeasurement error/mm Imaging dimensionNumber of layers Time/s
    Tao[13]Reference arm with variable optical path0.452D50.9
    Shanghai Jiao Tong University[14]Dual band dual focus OCT0.772D/3D510
    Marco[28]Reference arm with variable optical path0.022D53.4-4
    This systemLarge-scale measuring system0.042D50.45
    Table 2. Comparison results with traditional segmented measurement system
    Huaiyu Cai, Weiqian Zhang, Xiaoyan Han, Yi Wang, Wenguang Chen, Xiaodong Chen. Integrated imaging system of eye axis and anterior segment based on SS-OCT[J]. Infrared and Laser Engineering, 2020, 49(4): 0413006
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