Integrated Design and Implementation of Ocular Diopter and Biological Parameters Measurement

Cheng Wang; Jun Zhu; Lineng Xiong; Jianrong Dong; Lei Dai; Huazhong Xiang; Minghui Chen; Gang Zheng; Jie Zhao; Dawei Zhang

doi:10.3788/CJL221460

Chinese Journal of Lasers, Volume. 50, Issue 9, 0907208(2023)

Integrated Design and Implementation of Ocular Diopter and Biological Parameters Measurement

Cheng Wang¹, Jun Zhu¹, Lineng Xiong¹, Jianrong Dong¹, Lei Dai¹, Huazhong Xiang¹, Minghui Chen¹, Gang Zheng¹, Jie Zhao^2、*, and Dawei Zhang^3、**

Author Affiliations

¹Institute of Biomedical Optics and Optometry, Key Laboratory of Medical Optical Technology and Instruments, Ministry of Education, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

²Department of Ophthalmology, Yangpu District Shidong Hospital, Shanghai 200438, China

³Engineering Research Center of Optical Instruments and Systems, Ministry of Education, Key Laboratory of Modern Optical Systems, University of Shanghai for Science and Technology, Shanghai 200093, China

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Figures & Tables(9)

$Optical path diagram with integrated design of eye refraction and biological parameter measurement$

Fig. 1. Optical path diagram with integrated design of eye refraction and biological parameter measurement

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Fig. 2. Image formed by reflection of cornea and lens and distance x measurement

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Fig. 3. Eye axis length measurement

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Fig. 4. Corneal curvature measurement

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Fig. 5. Anterior chamber depth measurement

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Fig. 6. Diopter measurement image

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Table 1. Analysis of diopter measurement of standard model eye

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Table 1. Analysis of diopter measurement of standard model eye

Diopter of standard model eye /D	Mean±standard deviation	t value	P value
-20	-19.93±0.17	0.875	0.431
-15	-14.97±0.16	0.399	0.710
-10	-10.07±0.09	-1.723	0.160
-5	-5.05±0.07	-1.414	0.230
0	0.09±0.08	2.499	0.070
5	4.95±0.07	-1.414	0.230
10	10.02±0.13	0.343	0.749
15	14.93±0.12	-1.300	0.263
20	19.95±0.45	-0.247	0.817

Table 2. Analysis of measured human eye biological parameters and diopter
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Table 2. Analysis of measured human eye biological parameters and diopter
Parameter Sw TRT CoV /% ICC（95%CI）
A_L /mm 0.015 0.042 0.060 0.999
K 0.020 0.055 0.256 0.994
A_CD /mm 0.099 0.276 2.971 0.968
Spherical degree /D 0.043 0.120 3.656 0.894
Cylindrica degree/D 0.067 0.187 7.144 0.680

Table 3. Analysis of parameter measurement results of IOL Master and experimental prototype
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Table 3. Analysis of parameter measurement results of IOL Master and experimental prototype
Parameter Mean±standard deviation
t
value
P
value
Prototype IOL Master 500
A_L /mm 25.29±1.23 25.36±1.09 -0.532 0.617
K 7.74±0.32 7.75±0.31 -0.261 0.807
A_CD /mm 3.35±0.28 3.58±0.31 -1.834 0.141

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Cheng Wang, Jun Zhu, Lineng Xiong, Jianrong Dong, Lei Dai, Huazhong Xiang, Minghui Chen, Gang Zheng, Jie Zhao, Dawei Zhang. Integrated Design and Implementation of Ocular Diopter and Biological Parameters Measurement[J]. Chinese Journal of Lasers, 2023, 50(9): 0907208

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