Development of Axial Resolution Testing Device for Optical Coherence Tomograph for the Posterior Segment of the Human Eye and Measurement Uncertainty Analysis.
10.3969/j.issn.1671-7104.2020.04.007
- Author:
Jingtao WANG
1
;
Xiaohang JIA
1
;
Jianhua PENG
1
;
Yiping HU
1
;
Chao LUO
2
;
Ming CAI
2
Author Information
1. Zhejiang Institute of Medical Device Supervision and Testing, Hangzhou, 310018.
2. ZD Medical(Hangzhou) Co. Ltd., Hangzhou, 310053.
- Publication Type:Journal Article
- Keywords:
axial resolution;
evaluation of uncertainty;
metrology;
optical coherence tomography
- MeSH:
Algorithms;
Eye;
diagnostic imaging;
Humans;
Tomography, Optical Coherence;
Uncertainty
- From:
Chinese Journal of Medical Instrumentation
2020;44(4):315-318
- CountryChina
- Language:Chinese
-
Abstract:
Based on the analysis of the theoretical calculation model of axial resolution of optical coherence tomograph for the posterior segment of the human eye, a set of testing device for measuring its axial resolution is designed and developed. In view of a commercial ophthalmic optical coherence tomograph in clinical use, its axial resolution is calculated to be 5.07 μm theoretically, and the actual measurement value is 5.45 μm. The uncertainty of the detection device is evaluated and the result is (5.45±0.10) μm. The measurement error introduced by the testing device is very small. Meanwhile, the axial resolution measured by the testing device meets the requirements of the instrument(≤ 6 μm).
