<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper focuses on the problematic of intraocular pressure (IOP) measurements, performed by non-invasive methods. More specifically, the devices that are connected with the presented finding are non-contact tonometers that use concentrated air stream and optical sensors to determine the IOP within a human’s eye. The paper analyzes various influential factors that have an effect on the determination of the IOP values originating from the patients themselves and from the non-contact tonometer devices. The paper furthermore elaborates on the lack of independent methods of calibration and control of these devices. In order to fill this gap a measurement standard device that is capable of calibrating and testing these devices with traceability to the basic SI unit is presented. A detailed characterization and the determination of the expected uncertainty of the device are provided. By introducing an independent and traceable calibration method and control of non-contact tonometers into the clinical practice, the reliability of the measured IOP that is the primary indicator of glaucoma can be improved.</p></abstract>

This paper focuses on the problematic of intraocular pressure (IOP) measurements, performed by non-invasive methods. More specifically, the devices that are connected with the presented finding are non-contact tonometers that use concentrated air stream and optical sensors to determine the IOP within a human’s eye. The paper analyzes various influential factors that have an effect on the determination of the IOP values originating from the patients themselves and from the non-contact tonometer devices. The paper furthermore elaborates on the lack of independent methods of calibration and control of these devices. In order to fill this gap a measurement standard device that is capable of calibrating and testing these devices with traceability to the basic SI unit is presented. A detailed characterization and the determination of the expected uncertainty of the device are provided. By introducing an independent and traceable calibration method and control of non-contact tonometers into the clinical practice, the reliability of the measured IOP that is the primary indicator of glaucoma can be improved.

Developments and Progress in Non-contact Eye Tonometer Calibration

Department of Ophthalmology, Faculty of Medicine

Regional Inspectorate Most, Czech Metrology Institute

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Developments and Progress in Non-contact Eye Tonometer Calibration"}

This paper focuses on the problematic of intraocular pressure (IOP) measurements, performed by non-invasive methods. More specifically, the devices that are...

Developments and Progress in Non-contact Eye Tonometer Calibration

Published Online: Aug 24, 2020

Page range: 171 - 177

Received: Mar 24, 2020

Accepted: Aug 03, 2020

DOI: https://doi.org/10.2478/msr-2020-0021

Keywords
Glaucoma, tonometry, IOP measurements, non-contact, calibration, standard

© 2020 Peter Pavlásek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Developments and Progress in Non-contact Eye Tonometer Calibration

Published Online: Aug 24, 2020

Page range: 171 - 177

Received: Mar 24, 2020

Accepted: Aug 03, 2020

DOI: https://doi.org/10.2478/msr-2020-0021

KeywordsGlaucoma, tonometry, IOP measurements, non-contact, calibration, standard

© 2020 Peter Pavlásek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Glaucoma, tonometry, IOP measurements, non-contact, calibration, standard