UnknownNot Applicable

Eye Movement Behaviour and Pupil Size in Natural Outdoor and Indoor Scenes

Germany24 participantsStarted 2023-07-01

Plain-language summary

In this study, the researchers will be using eye tracking and detailed lighting measurements to understand how different types of indoor and outdoor lighting affect the eye movements and pupil sizes of our participants. Participants will be paired up and undergo six eye tracking sessions, split across two appointments. Each appointment will involve viewing either indoor or outdoor scenes, and before each session, participants will spend time adapting to the lighting conditions. Overall, each participant will spend 24 minutes being tracked, and the entire study will take about 2-3 hours to complete. The investigators expect differences in eye movements and pupil size between indoor and outdoor scenes.

Who can participate

Age range

18 Years – 40 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * No previous eye-surgeries or ocular impairments like anisometropia, amblyopia, strabism, cataract, watery eyes or hanging eye lids * Normal or corrected-to-normal visual acuity (+3dpt. to -5dpt.) * Normal colour vision * Normal binocular vision Exclusion Criteria: * Any use of medications or drugs that influence photosensitivity or the ability to concentrate * Excessive alcohol and/or drug use * Presence of psychiatric disorders * Poor sleep quality * Diagnosed with epilepsy

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Saccade frequency - Indoor scene 1

Timeframe: Baseline

Saccade frequency - Indoor scene 2

Timeframe: Baseline

Saccade frequency - Indoor scene 3

Timeframe: Baseline

Saccade frequency - Outdoor scene 1

Timeframe: Baseline

Saccade frequency - Outdoor scene 2

Timeframe: Baseline

Saccade frequency - Outdoor scene 3

Timeframe: Baseline

Saccade amplitude - Indoor scene 1

Timeframe: Baseline

Saccade amplitude - Indoor scene 2

Timeframe: Baseline

Trial details

NCT IDNCT05971238

SponsorTechnical University of Munich

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2023-08-31

Contact for this trial

Alexander Hahn

+49(0)70716011670 alexander.hahn@tuebingen.mpg.de

View on ClinicalTrials.gov More Light Sensitivity trials

Plain-language summary

Who can participate

Age range

18 Years – 40 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

What they're measuring

Saccade frequency - Indoor scene 1

Timeframe: Baseline

Saccade frequency - Indoor scene 2

Timeframe: Baseline

Saccade frequency - Indoor scene 3

Timeframe: Baseline

Saccade frequency - Outdoor scene 1

Timeframe: Baseline

Saccade frequency - Outdoor scene 2

Timeframe: Baseline

Saccade frequency - Outdoor scene 3

Timeframe: Baseline

Saccade amplitude - Indoor scene 1

Timeframe: Baseline

Saccade amplitude - Indoor scene 2

Timeframe: Baseline