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Small core FBG-based temperature compensated ‘smart’ contact lens for effective intraocular pressure measurement

Chen, Y., Wang, J., Zhao, Y., Liu, X-J, Zhang, H., Murdoch, I., Hull, C. ORCID: 0000-0002-2205-4443, Barbur, J. L. ORCID: 0000-0002-2187-5004, Sun, T. ORCID: 0000-0003-3861-8933 and Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2019). Small core FBG-based temperature compensated ‘smart’ contact lens for effective intraocular pressure measurement. Measurement: Sensors, doi: 10.1016/j.measen.2019.100001

Abstract

In this work, a small core, Fibre Bragg Grating (FBG)-based smart contact lens for intraocular pressure (IOP) measurement has been demonstrated. Further, an integral temperature compensation mechanism has been developed and included in the sensor design, allowing it to offer good long-term measurement capability while allowing for any local temperature fluctuations. The sensitivity of the device has been shown to be 12.9 p.m./mmHg, yielding good repeatability in tests carried out. Such a small core fibre, FBG-based smart contact lens shows significant potential for improving the management and therapy of glaucoma, the second most common cause of preventable blindness in the world.

Publication Type: Article
Additional Information: © 2019 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Publisher Keywords: Wearable sensor device, Contact lens, Glaucoma, Optical fibre sensor
Subjects: R Medicine > RE Ophthalmology
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: School of Health Sciences > Optometry & Visual Science
School of Mathematics, Computer Science & Engineering > Engineering > Electrical & Electronic Engineering
URI: http://openaccess.city.ac.uk/id/eprint/22627
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