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

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.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

20

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

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

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene

Akzeptiert gesunde Freiwillige

Ja

Beschreibung

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.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Sonstiges
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: 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

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.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Absolute Error of CLS-Predicted Intraocular Pressure Compared With Goldmann Applanation Tonometry
Zeitfenster: 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

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Agreement Between CLS-Predicted Intraocular Pressure and Non-Contact Tonometry
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

30. August 2026

Primärer Abschluss (Geschätzt)

30. November 2026

Studienabschluss (Geschätzt)

18. Februar 2027

Studienanmeldedaten

Zuerst eingereicht

12. August 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

15. August 2026

Zuerst gepostet (Tatsächlich)

18. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

18. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

15. August 2026

Zuletzt verifiziert

1. August 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 20260424074539870

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

JA

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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