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New stitch technique aims to prevent dangerous low eye pressure after glaucoma surgery

NCT ID NCT07531199

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether placing a temporary stitch inside a tiny drainage device (Preserflo) can reduce the risk of dangerously low eye pressure after glaucoma surgery. The device is already used in France to lower eye pressure, but low pressure can still happen. About 192 adults with glaucoma will be randomly assigned to get the stitch or not, and doctors will compare how often low pressure occurs.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 192 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Feb 2029

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

18 years and older

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: * Primary open-angle glaucoma, pseudoexfoliative glaucoma or pigmentary glaucoma with an indication for glaucoma surgery (defined as uncontrolled intraocular pressure or worsening of visual fields, despite maximum tolerated medical therapy) and an open iridocorneal angle (trabeculum visible on gonioscopy, Shaffer classification grade 3-4) * Healthy, mobile conjunctiva (without scarring or adhesions). * The indication for glaucoma surgery is defined as uncontrolled IOP or worsening of visual fields despite maximum tolerated medical therapy, and with either a previous failure of trabeculectomy or a risk of failure. * Maximum tolerated medical therapy: 3 or more classes of ocular hypotensive treatment, or fewer if there is an allergy or intolerance to the treatment. Visual field defects must be more severe than -3 dB in mean deviation. Exclusion Criteria: * severe systemic pathologies * other ophtalmic pathologies (except cataract) * previous intraocular surgery (except cataract) * neovascular glaucoma or iris neovascularization * pachymetry \< 490µm or \> 620µm * contraindication to PRESERFLO Microshunt

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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How to take part

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  1. The official record

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