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Gel plug in tear duct tested to keep eyes moist after cataract surgery

NCT ID NCT07809022

Symptom relief Sponsor: Medical University of Vienna Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 09, 2026 · Last updated Sep 10, 2026 · Updated 1 time

Summary

Dry eye can appear or worsen after cataract surgery, causing discomfort and blurry vision. Researchers at the Medical University of Vienna are testing whether a hyaluronic acid gel placed into the tear drainage duct of one eye can help retain tears and reduce dry eye. Each participant has one eye treated with the gel and the other eye receives standard artificial tear drops, so the two eyes can be compared directly. The trial measures tear production, tear film stability, symptoms, and safety over three months.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
A crosslinked hyaluronic acid gel placed into the tear drainage duct to temporarily block tears from draining away
What this could lead to
If it works, this could offer a single-application option to help eyes stay moist after cataract surgery, reducing reliance on frequent artificial tear drops.
What could go wrong
The trial is small, with 25 participants, and the gel is temporary, so any benefit may fade. Placing gel in the tear duct can cause irritation, infection, or blockage, and the approach may not outperform standard eye drops.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 25 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

45 to 99 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Uncomplicated bilateral cataract surgery for age-related cataract within the last 2-7 days * Implantation of the same type of lens in both eyes (diopters may differ). * Age 45-99 years * Willingness to complete the study * Signed informed consent form Exclusion Criteria: * Bilateral cataract due to a different cause * Retinal findings affecting quality of life or visual acuity in any eye * History of uncontrolled glaucoma in any eye (defined as intraocular pressure ≥ 25 mmHg despite treatment with anti-glaucoma mediation) * Active or suspected ocular or periocular infection in the study eye. * Vitreous hemorrhage or history of rhegmatogenous retinal detachment or macular hole in the study eye.

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Conditions

The condition(s) this trial relates to.

dry eye syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Dry eye Dry eye disease (DED) Dry eye sensation after cataract surgery

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Medical University of Vienna, Department of Ophthalmology and Optometry

    Vienna, State of Vienna, 1090, Austria

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