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Eye injection may ease pain of laser surgery for diabetic patients

NCT ID NCT07640256

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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jul 15, 2026 · Updated 3 times

Summary

This study compared two ways to control pain during laser treatment for diabetic retinopathy: a numbing injection around the eye versus standard numbing eye drops. Fifty adults with diabetes were split into two groups to receive either the injection or a sham injection with drops. Researchers measured pain levels and vital signs during the procedure to see which method worked better.

What this could mean

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

Active substance
bupivacaine and lidocaine injection
What this could lead to
If it works, this could offer a better way to manage pain during laser eye surgery for people with diabetic retinopathy.
What could go wrong
This is a small, completed Phase 4 trial with only 50 participants, so results may not apply to everyone. The injection itself carries risks like bruising or infection.

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

50 people

The number who actually took part.

Started

Jul 2023

Finished

Jun 2024

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: * Adults aged 18 years or older with proliferative diabetic retinopathy * Scheduled to undergo their first PRP session * Able to maintain the required posture at the slit lamp throughout the procedure Exclusion Criteria: * History of phobic anxiety disorder related to needles or injections * Known allergies or hypersensitivity to lidocaine, bupivacaine, or tetracaine * Use of analgesics within 24 hours prior to treatment * Cognitive or motor impairments that could hinder effective communication of pain.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Asociacion Para Evitar la Ceguera en Mexico, I.A.P.

    Mexico City, Mexico City, 04030, Mexico

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