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Safety, Tolerability, and Accuracy of a Hydrogel-Based Wearable Dynamic Intraocular Pressure Sensor in Healthy Adults

15 augustus 2026 bijgewerkt door: Peiyao Jin, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Safety, Tolerability, and Accuracy of a Novel Hydrogel-Based Wearable Dynamic Intraocular Pressure Sensor in Healthy Adults: A Single-Center, Single-Arm Exploratory Clinical Trial

The occurrence and progression of eye diseases like glaucoma are closely related to intraocular pressure fluctuations. Traditional single-point intraocular pressure measurement methods cannot reflect daily dynamic changes and are prone to missing hidden intraocular pressure peaks, limiting precise diagnosis and individualized treatment. This project aims to evaluate the wearing safety and measurement accuracy of a new low-modulus, high-strength hydrogel wearable dynamic intraocular pressure sensor. This product adopts the form of smart contact lenses, fully embedding a micro sensor into a hydrogel lens, combined with an external antenna mount and a portable recorder to continuously detect and wirelessly record even slight changes in corneal curvature, thereby obtaining real-time intraocular pressure fluctuation trend data. Based on this, the objective of this study is to evaluate the safety, measurement accuracy and tolerabilityof a wearable dynamic intraocular pressure sensor based on a novel hydrogel in healthy volunteers.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

20

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200080
        • Shanghai General Hospital

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen

Accepteert gezonde vrijwilligers

Ja

Beschrijving

Inclusion Criteria:

  • Voluntarily agrees to participate in the study and provides written informed consent.
  • Has previously worn contact lenses.
  • Has no ocular disease other than refractive error.
  • Central corneal thickness between 540 and 560 μm, inclusive.
  • Corneal curvature between 42 and 44 D, inclusive.

Exclusion Criteria:

  • Unable to tolerate the hydrogel-based wearable dynamic intraocular pressure sensor.
  • Pregnant or breastfeeding.
  • History of allergy to relevant medical materials or known hypersensitivity to materials used in the investigational device.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Ander
  • Toewijzing: NVT
  • Interventioneel model: Opdracht voor een enkele groep
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Hydrogel-Based Wearable Dynamic Intraocular Pressure Sensor

Participants will undergo a single-arm evaluation of a hydrogel-based wearable dynamic intraocular pressure sensor (CLS). After 2 hours of fasting from food and water, baseline ocular safety examinations will be performed. Intraocular pressure will first be measured using non-contact tonometry (NCT) and Goldmann applanation tonometry (GAT). Participants will then wear the CLS and undergo a 10-minute adaptation period before the first sensor signal is recorded.

Participants will drink 1 L of water within 5 minutes. At 10-15 minutes after completion of water intake, a second sensor signal will be recorded, followed by CLS removal and repeat GAT and NCT measurements. After an interval of at least 45 minutes, NCT and GAT will be repeated, the CLS will be worn again for a 10-minute adaptation period, and a third sensor signal will be recorded. After completion of the measurement procedure, the CLS will be removed and ocular safety examinations will be repeated to evaluate changes associate
Apparaat: Hydrogel-Based Wearable Dynamic Intraocular Pressure Sensor
The investigational device is a wearable hydrogel-based contact lens sensor designed to record electrical signals associated with changes in intraocular pressure. The CLS is worn on the study eye and allowed to stabilize for 10 minutes before signal acquisition. Sensor signals are obtained at three predefined measurement points and compared with Goldmann applanation tonometry measurements to assess measurement accuracy.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Absolute Error of CLS-Predicted Intraocular Pressure Compared With Goldmann Applanation Tonometry
Tijdsspanne: Day 1, at the third validation measurement
The first two paired measurements of the contact lens sensor (CLS) signal and Goldmann applanation tonometry (GAT) intraocular pressure will be used to establish an individualized linear calibration equation for each participant. The third CLS signal will be converted to a predicted intraocular pressure using the individualized calibration equation. Absolute error is defined as the absolute difference between the CLS-predicted intraocular pressure and the corresponding GAT measurement, expressed in mmHg.
Day 1, at the third validation measurement

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Agreement Between CLS-Predicted Intraocular Pressure and Non-Contact Tonometry
Tijdsspanne: Day 1, at the third validation measurement
At the third validation assessment, intraocular pressure predicted from the contact lens sensor (CLS) using the individualized calibration equation will be compared with the corresponding non-contact tonometry (NCT) measurement.
Day 1, at the third validation measurement
Increased incidence of corneal fluorescent staining grade
Tijdsspanne: Baseline and at the post-study ocular examination on Day 1
Corneal fluorescence staining grading (National Eye Institute (NEI) standards) The cornea is divided into five regions (central, top, and above).Square, inferior, nasal side, temporal side), each area scores 0-3 points (0 = unstained, 1 = sparse dots, 2 = dense dots, 3 = fused or patchy)
Baseline and at the post-study ocular examination on Day 1
Conjunctival congestion score
Tijdsspanne: Baseline and at the post-study ocular examination on Day 1
The Ora Calibra® scale was used to measure conjunctival redness in each eye. Each eye will be rated on a scale from 0 to 4, with 0 being best and 4 being the worst.
Baseline and at the post-study ocular examination on Day 1
Change From Baseline in Tear Break-Up Time After CLS Wear
Tijdsspanne: Baseline and at the post-study ocular examination on Day 1
Tear break-up time (TBUT) will be measured before and after CLS wear. After blinking several times, the participant will keep the eye open while looking straight ahead, and the time until the first dry spot appears in the tear film will be recorded in seconds.
Baseline and at the post-study ocular examination on Day 1
Change From Baseline in Best-Corrected Visual Acuity After CLS Wear
Tijdsspanne: Baseline and at the post-study ocular examination on Day 1
Best-corrected visual acuity (BCVA) will be assessed before and after CLS wear. Change from baseline will be calculated by comparing the post-study BCVA with the baseline BCVA.
Baseline and at the post-study ocular examination on Day 1
CLDEQ-8-Based Immediate Ocular Tolerability Questionnaire
Tijdsspanne: Immediately after completion of CLS wear on Day 1

Immediate ocular tolerability during wear of the investigational contact lens sensor (CLS) will be assessed using a study-specific questionnaire adapted from the Contact Lens Dry Eye Questionnaire-8 (CLDEQ-8).

The questionnaire contains eight items assessing: frequency and intensity of ocular discomfort, frequency and intensity of ocular dryness, frequency and intensity of fluctuating or blurred vision, frequency of wanting to close the eye because of discomfort, and the desire to remove the CLS because of discomfort.

Frequency items are scored from 0 to 4, intensity items from 0 to 5, and the item assessing the desire to remove the CLS from 1 to 6. Higher scores indicate worse ocular tolerability.
Immediately after completion of CLS wear on Day 1

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

30 augustus 2026

Primaire voltooiing (Geschat)

30 november 2026

Studie voltooiing (Geschat)

18 februari 2027

Studieregistratiedata

Eerst ingediend

12 augustus 2026

Eerst ingediend dat voldeed aan de QC-criteria

15 augustus 2026

Eerst geplaatst (Werkelijk)

18 augustus 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

18 augustus 2026

Laatste update ingediend die voldeed aan QC-criteria

15 augustus 2026

Laatst geverifieerd

1 augustus 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • 20260424074539870

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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