Could a fatty meal skew your eye scan?
NCT ID NCT07818239
First seen Sep 14, 2026 · Last updated Sep 15, 2026 · Updated 1 time
Summary
Researchers at the Medical University of Vienna are testing whether what a person eats before an eye scan changes the pictures taken of blood vessels in the retina. Ten healthy adults eat a high-fat meal on one day and a high-carbohydrate meal on another, then receive optical coherence tomography (OCT) and OCT angiography imaging. The study asks whether a fatty meal, which raises blood fat particles for a few hours, makes retinal vessels look different on these scans compared with a carb-heavy meal.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a high-fat meal compared with a high-carbohydrate meal
- What this could lead to
- If meals do shift retinal blood vessel readings, doctors could one day standardize when patients eat before an eye scan, making those measurements more reliable.
- What could go wrong
- This is a tiny study of 10 healthy adults, so any effect seen may not apply to people with eye or heart disease. A single meal may also change nothing measurable.
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
-
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
-
About 10 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Sep 2026
- Expected to finish
-
Sep 2027
An estimate. End dates often move.
- 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
-
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 over 18 years * Signed informed consent * Normal findings in the medical history unless the investigator considers an abnormality to be clinically irrelevant * Normal ophthalmic findings Exclusion Criteria: * Symptoms of a clinically relevant illness in the 3 weeks before the first study day * Presence or history of a severe medical condition as judged by the clinical investigator * Regular use of medication, abuse of alcoholic beverages, participation in a clinical trial in the 3 weeks preceding the study (except hormonal contraceptives) * Untreated arterial hypertension (defined as either systolic blood pressure \>150 mmHg or diastolic blood pressure \>95 mmHg) * Blood donation during the previous three weeks * Presence of any abnormalities preventing reliable measurements in the study eye as judged by the investigator * Pregnancy, planned pregnancy or lactating * Lactose intolerance or other relevant food allergy or sensitivity
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Healthy adult are added.
By submitting, you agree to our Terms of use
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.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
-
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
-
Department of Clinical Pharmacology, Medical University of Vienna
Vienna, Austria
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can magnetic brain zaps ease the pain of a sleepless body?
- Can poor sleep make you hurt more? study probes Insomnia's link to pain
- Does soreness after exercise disrupt sleep more for people with insomnia?
- Can a week at sea level reset lung pressure for high-altitude dwellers?
- Can a week at sea level ease the strain of High-Altitude living on the lungs?
- Can a short trip to sea level reset the lungs of high-altitude dwellers?