Eye test could reveal if You've had caffeine or alcohol
NCT ID NCT07625358
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how caffeine and alcohol change the way your pupils react to light and how your eyes move. Researchers will give 100 healthy adults aged 30-50 either caffeine, alcohol, or a placebo in separate sessions. They will use a handheld device to measure pupil responses, eye movements, and other eye health markers over two hours. The goal is to see if these changes can help create a portable tool to quickly detect recent caffeine or alcohol intake.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- caffeine and alcohol
- What this could lead to
- If successful, this could lead to a quick, non-invasive eye test to detect recent caffeine or alcohol use for safety and clinical purposes.
- What could go wrong
- This is an early-stage observational study with only 100 participants, so results may not apply to everyone. The findings are exploratory and may not lead to a reliable detection method.
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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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National University of Singapore, E7 Building, Level 7, 15 Kent Ridge Cres
RECRUITINGSingapore, 119276, Singapore
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