Comparison of measurement results of multiple transfer standards in different non-contact tonometers

Ruidan Xue; Wenli Liu; Baoyu Hong; Zhixiong Hu

doi:10.1117/12.2644086

19 December 2022 Comparison of measurement results of multiple transfer standards in different non-contact tonometers

Ruidan Xue, Wenli Liu, Baoyu Hong, Zhixiong Hu

Proceedings Volume 12320, Optics in Health Care and Biomedical Optics XII; 1232023 (2022) https://doi.org/10.1117/12.2644086
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

The non-contact tonometer transfer standard is an eye-like design that simulates the human eye's response to the airflow and light beam emitted by the non-contact tonometer. The rubber eye, one of the most commonly used transfer standards, is currently available in two structural designs: discrete and adjustable. In this paper, 4 kinds of rubber eyes made by different manufacturers were tested on 10 different models of non-contact tonometers. The results showed that except one model could not be tested with rubber eyes, the measurement values of the other 9 models of non-contact tonometers had large dispersion and low consistency, whether discrete or adjustable rubber eyes are used. Therefore, it is unscientific to assign a fixed reference pressure value to the transfer standard to verify various models of non-contact tonometers. The determination of the reference pressure value should be further studied to ensure the accuracy of the measurement results of the non-contact tonometer.

Citation Download Citation

Ruidan Xue, Wenli Liu, Baoyu Hong, and Zhixiong Hu "Comparison of measurement results of multiple transfer standards in different non-contact tonometers", Proc. SPIE 12320, Optics in Health Care and Biomedical Optics XII, 1232023 (19 December 2022); https://doi.org/10.1117/12.2644086

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