Healthy eyes reveal aging secrets in oxygen study
NCT ID NCT06643403
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how the retina's ability to use oxygen changes as people age. Researchers will measure oxygen extraction in 50 healthy adults aged 18 to 80 using non-invasive eye scans. The goal is to understand normal aging, which may help future studies on eye diseases.
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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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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2024
- Expected to finish
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Jan 2026
An estimate. End dates often move.
- 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 80 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Men and women aged between 18 and 80 years * Signed informed consent * Normal ophthalmic findings, unless the investigator considers an abnormality to be clinically irrelevant for the purpose of the study * Normal findings in the medical history, unless the investigator considers an abnormality to be clinically irrelevant for the purpose of the study * Nonsmokers Exclusion Criteria: * Abuse of alcoholic beverages or drugs * Participation in a clinical trial in the 3 weeks preceding the study * Symptoms of a clinically relevant illness in the 3 weeks before the first study day * Blood donation during the previous 3 weeks * Pregnant or breast-feeding women
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Department of Clinical Pharmacology, Medical University of Vienna, Austria
RECRUITINGVienna, State of Vienna, 1090, Austria
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