Blinking Exercise Study
Starting soon · Not applicable
Conditions studied: Dry Eye Disease (DED), Glaucoma
In brief
The goal of this clinical trial is to evaluate whether a structured blinking exercise can improve symptoms and signs of dry eye disease (DED) in adults with glaucoma who are using topical intraocular pressure-lowering medications. The study will also assess the effects of the intervention on tear film stability, blink function, and participant adherence to the exercise. The main questions this study aims to answer are: Does a two-week structured blinking exercise reduce dry eye symptoms, as measured by the Ocular Surface Disease Index (OSDI) and Symptom Assessment in Dry Eye (SANDE) questionnaires? Does the blinking exercise improve objective measures of ocular surface health, including non-invasive tear break-up time (NITBUT) and blink dynamics? Researchers will compare glaucoma patients receiving topical medications (intervention group) with glaucoma suspects not using topical therapy (control group) to evaluate the effectiveness of the blinking exercise on dry eye outcomes. Participants in both groups will receive instruction on a standardized blinking exercise protocol consisting of repeated close-squeeze-open blinking cycles performed three times daily for two weeks. Participants will attend study visits at baseline, 2 weeks (post-intervention), and 4 weeks (follow-up). At each visit, participants will complete validated dry eye questionnaires and undergo non-invasive assessments of tear film stability, blink characteristics, and meibomian gland function. Adherence to the blinking exercise will be monitored using self-reported logs or reminders.
Key facts
- Study ID
- NCT07554937
- Run by
- St. Joseph's Healthcare Hamilton
- People needed
- 45
- Starts
- 2026-08-01
- Expected to finish
- 2027-03-01
- Last updated by the study team
- 2026-05-04
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- 18 years of age or older.
- Those in the intervention group must have a confirmed diagnosis of glaucoma and be using at least one topical antiglaucoma medication.
- Control participants must be glaucoma suspects who have not yet commenced topical therapy.
You may not qualify if…
- Glaucoma patients who have had ocular surgery within the previous six months, contact lens wear, systemic inflammatory or autoimmune diseases affecting the ocular surface, or other ocular surface disorders such as severe blepharitis or keratoconjunctivitis sicca.
Full record on ClinicalTrials.gov
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