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

Ye Chen; Jun Wang; Yin Zhao; Xiao-Jun Liu; Hong Zhang; Ian Murdoch; Chris Hull; John Barbur; Tong Sun; KennethT.V. Grattan

Measurement: Sensors (Dec 2019)

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

Ye Chen,
Jun Wang,
Yin Zhao,
Xiao-Jun Liu,
Hong Zhang,
Ian Murdoch,
Chris Hull,
John Barbur,
Tong Sun,
KennethT.V. Grattan

Affiliations

Ye Chen: Department of Electrical & Electronic Engineering, School of Mathematics, Computer Science & Engineering, City, University of London, Northampton Square, London, EC1V 0HB, United Kingdom; Corresponding author.
Jun Wang: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
Yin Zhao: Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
Xiao-Jun Liu: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China
Hong Zhang: Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
Ian Murdoch: Institute of Ophthalmology, University College London, Bath Street, EC1V 9EL, London, United Kingdom
Chris Hull: Centre for Applied Vision Research, School of Health Sciences, City, University of London, London, EC1R 1UB, United Kingdom
John Barbur: Centre for Applied Vision Research, School of Health Sciences, City, University of London, London, EC1R 1UB, United Kingdom
Tong Sun: Department of Electrical & Electronic Engineering, School of Mathematics, Computer Science & Engineering, City, University of London, Northampton Square, London, EC1V 0HB, United Kingdom; Corresponding author.
KennethT.V. Grattan: Department of Electrical & Electronic Engineering, School of Mathematics, Computer Science & Engineering, City, University of London, Northampton Square, London, EC1V 0HB, United Kingdom

Journal volume & issue: Vol. 1
p. 100001

Abstract

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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.

Published in Measurement: Sensors

ISSN: 2665-9174 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Electric apparatus and materials. Electric circuits. Electric networks
Website: https://www.journals.elsevier.com/measurement-sensors

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