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Transcutaneous Auricular Vagus Nerve Stimulation in Dry Eye Disease With Meibomian Gland Dysfunction

NCT06544447 · Status: RECRUITING · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 135

Last updated 2024-08-09

No results posted yet for this study

Summary

Objective: To evaluate the effect of transcutaneous auricular vagus nerve stimulation (taVNS) for the patients with dry eye disease with meibomian gland dysfunction.

Methods: We enrolled 270 patients at Beijing Tongren Hospital. All treatments were self-administered by the patients at home after training at the hospital. Patients completed questionnaires at baseline, 1 month, 3 months, and 6 months.

OSDI score, TBUT, OPAS, NPSI-eye, and Schirmer I expressibility and secretion score to evaluate the therapeutic effects. A difference of P \< 0.05 was considered statistically significant.

Conditions

  • Dry Eye

Interventions

DEVICE

taVNS

taVNS device (Elmmedicare, EC100, Shenzhen, China) was used to apply stimulation for patients. Stimulation parameters comprised an electrical current of 1 mA at a frequency of 20 Hz, with a waveform width of 1 ms. Repurposed off-the-shelf devices were utilized for this purpose, with the stimulator generating single square-wave pulses lasting 1 ms each. Enhancing conductivity was achieved by wiping the ear with tap water. The electrodes were placed on the cymba conchae and concha around the affected ear, which is the region of rich vagus nerve branch distribution. Patients in control group were applied using the same stimulator, stimulation parameters and same sessions. However, the electrodes were placed on the antihelix around the affected ear, which is the region of few vagus nerve branch distribution.

DRUG

Hyaluronic acid eye drops

Participants in both groups received hyaluronic acid eye drops (HYLO COMOD® eye drops, Ursapharm, Ltd., Germany) with the treatment of 3 times a day.

Sponsors & Collaborators

  • Beijing Tongren Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-06-01
Primary Completion
2024-10-01
Completion
2024-10-01

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06544447 on ClinicalTrials.gov