Clinical Evidence for Use of a Noninvasive Biosensor for Tear Glucose as an Alternative to Painful Finger-Prick for Diabetes Management Utilizing a Biopolymer Coating
Open accessAbstract
Diabetes is a metabolic condition that is exponentially increasing worldwide. Current monitoring methods for diabetes are invasive, painful, and expensive. Herein, we present the first multipatient clinical trial that demonstrates clearly that tear fluid may be a valuable marker for systemic glucose measurements. The NovioSense Glucose Sensor, worn under the lower eye lid (inferior conjunctival fornix), is reported to continuously measure glucose levels in the basal tear fluid with good correlation to blood glucose values, showing clear clinical feasibility in both animals and humans. Furthermore, the polysaccharide coated device previously reported by our laboratory when worn, does not induce pain or irritation. In a phase II clinical trial, six patients with type 1 Diabetes Mellitus were enrolled and the capability of the device to measure glucose in the tear fluid was evaluated. The NovioSense Glucose Sensor gives a stable signal and the results correlate well to blood glucose values obtained from finger-prick measurements determined by consensus error grid analysis.
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Scientific data evidenced how commercially available test strips exhibit the required performance to evaluate glucose concentration in low-volume tears.
“Scientific data evidenced how commercially available test strips exhibit the required performance to evaluate glucose concentration in low-volume tears 166-168.”
From Glucose biosensors in clinical practice: principles, limits and perspectives of currently used devices (2022) · cites this paper as [166]
The Results and Discussion describe glucose test strips used to analyze blood samples, while a separate NovioSense sensor measured tear glucose. The Introduction notes the tear film’s small volume, but our copy does not assess whether commercially available strips can measure glucose in low-volume tears (searched for test strips and tear volume). (LLM, conf=0.76)
Experimental — accuracy not yet measuredA recent clinical trial demonstrated great correlation between tear and blood glucose concentrations in animals and humans (including patients with type 1 diabetes).
“A recent clinical trial demonstrated great correlation between tear and blood glucose concentrations in animals and humans (including patients with type 1 diabetes)119.”
From Wearable biosensors for healthcare monitoring (2019) · cites this paper as [119]
Such sensor placement at the base of the eye provides continuously accessible tear glucose measurements when coupled with wireless data transmission, without causing discomfort.
“Such sensor placement at the base of the eye (behind the eyelid) provides continuously accessible tear glucose measurements when coupled with wireless data transmission, without causing discomfort.”
From Wearable biosensors for healthcare monitoring (2019) · cites this paper as [119]
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- Authors
- Kownacka, A. E., Vegelyte, D., Joosse, M., Anton, N., Toebes, B. J., Lauko, J., Buzzacchera, I., Lipinska, K., Wilson, D. A., Geelhoed-Duijvestijn, N., & Wilson, C. J.
- Affiliations
- NovioSense B.V. , NovioTech Campus, Transistorweg 5 , ,
- Medisch Centrum Haaglanden (NL)
- Grigore T. Popa University of Medicine and Pharmacy (RO)
- Radboud University Nijmegen (NL)
- Corresponding author
- Geelhoed-Duijvestijn, Nel
- Wilson, Christopher J.
- Venue
- Biomacromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-10-12
- Volume
- 19
- Issue
- 11
- Pages
- 4504-4511
- ISSN
- 1525-7797 (ISSN-L)
- 1526-4602
- PMC
- PMC6234487
- OpenAlex
- W2898045499
- Cited by
- 164
- References
- 31
- Citations by year
- 2026: 9 · 2025: 27 · 2024: 22 · 2023: 29 · 2022: 27 · 2021: 24 · 2020: 14 · 2019: 12
- FWCI
- 9.94
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Biomacromolecules (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Radboud Repository (Radboud University) (submittedVersion)
- Radboud Repository (Radboud University) (submittedVersion, other-oa)
- Funders
- European Commission (HORIZON2020, 642687)
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
- 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
- Keywords
- tear glucose, non-invasive glucose monitoring, type 1 diabetes, biosensors, conjunctival fornix, polysaccharide coatings, clinical trials
- MeSH terms
- Animals, Biopolymers, Diabetes Mellitus, Glucose, Humans, Monitoring, Physiologic, Rabbits, Sheep, Tears, Biosensing Techniques, Disease Management
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