Can brain signals save your sight during surgery?
NCT ID NCT01517789
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new way to monitor vision during brain surgery near the optic nerve. Researchers used special goggles and anesthesia to track brain signals (visual evoked potentials) in 40 patients. The goal was to see if this method could help surgeons avoid damaging eyesight. Results will show whether this monitoring technique is reliable enough to protect vision.
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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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40 people
The number who actually took part.
- Start date
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Jan 2012
- Finished
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Sep 2014
- 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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13 years and older
- 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: * Patients with lesion compressing or near the optical pathways Exclusion Criteria: * Patients with photic epilepsy
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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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CHU Bordeaux - hôpital Pellegrin
Bordeaux, 33000, France
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Other studies related to the condition(s) this trial covers.
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