Numbing shots before eye surgery may cut pain and nausea
NCT ID NCT03413371
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether giving a numbing injection around the eye before retinal surgery could lower pain, nausea, and a reflex that slows the heart during the operation. 184 adults having vitreoretinal surgery took part. Researchers compared three different numbing medicines to see which worked best.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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184 people
The number who actually took part.
- Started
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Apr 2018
- Finished
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Dec 2022
- Lead sponsor
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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
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18 to 90 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * written consent to participate in the study written consent to undergo general anaesthesia alone or combined with different techniques of pre-emptive analgesia and vitreoretinal surgery Exclusion Criteria: * history of allergy to local anaesthetics or paracetamol necessity of administration of vasoactive drugs influencing SPI monitoring pregnancy
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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
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Medical University of Silesia
Sosnowiec, Silesian Voivodeship, 41-200, Poland
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Other studies related to the condition(s) this trial covers.
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