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Eye drops during surgery may be unnecessary, new study suggests

NCT ID NCT07562594

Symptom relief Sponsor: Fatih Sultan Mehmet Training and Research Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 simply taping the eyelids shut during general anesthesia is enough to protect the cornea, or if adding lubricant eye drops is better. Two hundred adults having non-eye surgery will be randomly assigned to one of the two methods. The main goal is to see how much corneal damage occurs, measured by a special dye test one hour after surgery.

What this could mean

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

Active substance
Hypoallergenic eyelid taping with or without carboxymethylcellulose lubricant eye drops
What this could lead to
If taping alone works as well as taping plus drops, hospitals could save money and simplify eye care during surgery without harming patients.
What could go wrong
This is a small, early-stage trial with 200 patients. The results may not apply to longer surgeries or people with existing eye problems.

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 200 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

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 to 75 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Age 18 to 75 years * ASA physical status I or II * Scheduled for elective non-ocular surgery under general anesthesia * Expected anesthesia duration between 30 and 180 minutes * Supine surgical position * Ability to provide written informed consent Exclusion Criteria: * Preoperative corneal epithelial defect, keratitis, conjunctivitis, conjunctival hyperemia, or chemosis * Known ocular surface disease (dry eye syndrome, Sjögren syndrome, rheumatoid arthritis, systemic lupus erythematosus, or other systemic conditions associated with ocular surface involvement) * Use of topical or systemic medications known to affect tear production within the past 30 days * History of ocular surgery or ocular trauma * Contact lens use * Planned head and neck surgery * Prone or lateral decubitus surgical position * Patients requiring rapid sequence induction * Inability or refusal to provide written informed consent

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Conditions

The condition(s) this trial relates to.

Corneal Injuries exposure keratitis

As listed by the trial registrant

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

Corneal injury Exposure keratopathy Perioperative complications

How to take part

Only the study team decides who joins. These are the ways to reach them.

  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

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Istanbul Provincial Health Directorate Fatih Sultan Mehmet Training and Research Hospital

    Istanbul, 34000, Turkey (Türkiye)

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