Eye injection may ease pain of laser surgery for diabetic patients
NCT ID NCT07640256
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 Hide 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
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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