Could a fatty meal skew your eye scan?

NCT ID NCT07818239

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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

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

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Contacts and locations

Locations

  • Department of Clinical Pharmacology, Medical University of Vienna

    Vienna, Austria

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