Chinese Journal of Lasers, Volume. 47, Issue 2, 207041(2020)

Intraocular Laser Surgery Combined Calibration Method Based on Bimodal Image Information

Yang Fan, Chen Cong, Shen Chaoyi, and Fan Licheng*
Author Affiliations
  • School of Mechanical and Electric Engineering, Soochow University, Suzhou, Jiangsu 215301, China
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    Figures & Tables(12)
    Image navigation plan in LenSx eye surgery system. (a) Interface of capsulorhexis; (b) interface of corneal incision
    Overall structural diagram of OCT scanning imaging system
    Diagrams of linear and circular scanning modes. (a) Parallel scanning; (b) radial scanning; (c) concentric ring scanning
    Coordinate and voltage conversion diagram
    Multi-mode positioning scanning. (a) Circular scanning; (b) radial linear scanning
    Outline extraction results of anterior segment OCTimage of a porcine eye. (a) 60 iterations; (b) 210 iterations
    OCT image of sample thickness measurement.(a) Sample picture; (b) OCT image of sample
    Diagram of annular scanning experiment. (a) Sample picture; (b) geometric relationship diagram; (c) OCT image of sample
    Corneal incision and acquired capsulorhexis information. (a) Porcine eye; (b) local linear scanning image; (c) annular scanning image
    • Table 1. Detail parameters of gauge blockmm

      View table

      Table 1. Detail parameters of gauge blockmm

      Total thicknessDiameterGroovethicknessGroovewidth
      10±0.00420±0.052±0.0042±0.004
    • Table 2. Comparison of measurement results of gauge block

      View table

      Table 2. Comparison of measurement results of gauge block

      ParameterMeasured value /mmDeviation /μm
      Total thickness10.02323
      Groove thickness2.03131
      Groove width2.06464
    • Table 3. Results of annular scanning measurement

      View table

      Table 3. Results of annular scanning measurement

      Voltage /VDT /mmDS /μmDeviation /μm
      0.8005.2385.112126
      1.0006.5496.430119
      1.2007.8617.745116
      1.4009.1748.979195
      1.60010.48910.335154
      1.80011.80511.612193
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    Yang Fan, Chen Cong, Shen Chaoyi, Fan Licheng. Intraocular Laser Surgery Combined Calibration Method Based on Bimodal Image Information[J]. Chinese Journal of Lasers, 2020, 47(2): 207041

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    Paper Information

    Category: biomedical photonics and laser medicine

    Received: Jun. 27, 2019

    Accepted: --

    Published Online: Feb. 21, 2020

    The Author Email: Licheng Fan (flcthy@126.com)

    DOI:10.3788/CJL202047.0207041

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