Cited by 85Electrochemical sensors and biosensorsOcular Surface and Contact LensAdvanced Sensor and Energy Harvesting Materials

Biomedical soft contact-lens sensor for in situ ocular biomonitoring of tear contents

Chu, MingXing, Shirai, Takayuki, Takahashi, Daishi, Arakawa, Takahiro, Kudo, Hiroyuki, Sano, Kenji, Sawada, Shin-ichi, Yano, Kazuyoshi +4 more·2011·Biomedical Microdevices

Abstract

A soft contact-lens biosensor (SCL-biosensor) for novel non-invasive biomonitoring of tear fluids was fabricated and tested. Wearing a biosensor on eye enabled the in situ monitoring of tear contents. The biosensor has an enzyme immobilized electrode on the surface of a polydimethyl siloxane (PDMS) contact lens. The SCL-biosensor was fabricated using microfabrication techniques for functional polymers (PDMS and 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer). In investigation of in vitro characterization, the SCL-biosensor showed excellent relationship between the output current and glucose concentration from 0.03 to 5.0 mmol·L(-1), with a correlation coefficient of 0.994. The calibration range covered the reported tear glucose concentrations (0.14 mmol·L(-1)). Based on the result, ocular biomonitoring with the SCL-biosensor was carried out. The SCL-biosensor well worked both in the static state and the dynamic state. The tear glucose level of rabbit was estimated to 0.12 mmol·L(-1) at first and then the tear turnover was successfully calculated to be 29.6 ± 8.42% min(-1). The result indicated that SCL-biosensor is useful for advanced biomonitoring on eye.

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Crossref · 10.1007/s10544-011-9530-x

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37 of 37 references verified0 citation errors · 0 not checkable

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  • Tear glucose concentrations have been demonstrated to exhibit good correlation with blood glucose levels, reflecting diffusion from the lachrymal artery when tears are sampled without eye irritation or stimulation, which can compromise the relationship.

    “In particular, tear glucose concentrations have been demonstrated to exhibit good correlation with blood glucose levels, reflecting the diffusion from the lachrymal artery when the tears are sampled without any eye irritation or stimulation, which can compromise the relationship94, 95, 99-101.”

    From Wearable biosensors for healthcare monitoring (2019) · cites this paper as [101]

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Authors
Chu, M., Shirai, T., Takahashi, D., Arakawa, T., Kudo, H., Sano, K., Sawada, S.-I., Yano, K., Iwasaki, Y., Akiyoshi, K., Mochizuki, M., & Mitsubayashi, K.
Affiliations
  • Tokyo Medical and Dental University (JP)
  • Tokyo University of Technology (JP)
  • Kansai University (JP)
Corresponding author
Mitsubayashi, Kohji
Venue
Biomedical Microdevices
Published
2011-04-08
Volume
13
Issue
4
Pages
603-611
ISSN
  • 1387-2176 (ISSN-L)
  • 1572-8781
OpenAlex
W2043624863
Cited by
85
References
39
Citations by year
2026: 2 · 2025: 1 · 2024: 9 · 2023: 6 · 2022: 5 · 2021: 11 · 2020: 9 · 2019: 4 · 2018: 8 · 2017: 8 · 2016: 8 · 2015: 4 · 2014: 6 · 2013: 1 · 2012: 3
FWCI
2.24
Type
journal article
Language
en
Open access
closed
Locations
  • Biomedical Microdevices (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (21650041)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ocular Surface and Contact Lens
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
Keywords
non-invasive biomonitoring, 2-methacryloyloxyethyl phosphorylcholine, rabbit eye
MeSH terms
Animals, Calibration, Contact Lenses, Hydrophilic, Dimethylpolysiloxanes, Eye, Glucose, Methacrylates, Phosphorylcholine, Rabbits, Tears, Vision, Ocular, Biosensing Techniques, Biomedical Technology, Microtechnology

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