Clinical trial NCT05971238: Eye Movement Behaviour and Pupil Size in Natural Outdoor and Indoor Scenes
Official title: Characterization of Eye Movement Behaviour and Pupil Size Through Eye-tracking in Natural Outdoor and Indoor Scenes
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: Light Sensitivity
Lead sponsor: Technical University of Munich
Sponsor class: OTHER
Collaborators: name: Max-Planck Institute for Biological Cybernetics
First posted: 2023-08-02
Enrollment: 24
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Intervention model description: All participants will be exposed to the same environmental conditions (same indoor and outdoor scenes for the same duration) and the captured eye-movement data of every participant will be of the same type. Participants will be exposed to different orders of scene sequences.
Primary purpose: BASIC_SCIENCE

Brief 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.


Eligibility criteria: 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

Primary outcomes:
measure: Saccade frequency - Indoor scene 1
timeFrame: Baseline
measure: Saccade frequency - Indoor scene 2
timeFrame: Baseline
measure: Saccade frequency - Indoor scene 3
timeFrame: Baseline
measure: Saccade frequency - Outdoor scene 1
timeFrame: Baseline
measure: Saccade frequency - Outdoor scene 2
timeFrame: Baseline
measure: Saccade frequency - Outdoor scene 3
timeFrame: Baseline
measure: Saccade amplitude - Indoor scene 1
timeFrame: Baseline
measure: Saccade amplitude - Indoor scene 2
timeFrame: Baseline
measure: Saccade amplitude - Indoor scene 3
timeFrame: Baseline
measure: Saccade amplitude - Outdoor scene 1
timeFrame: Baseline
measure: Saccade amplitude - Outdoor scene 2
timeFrame: Baseline
measure: Saccade amplitude - Outdoor scene 3
timeFrame: Baseline
measure: Saccade velocity - Indoor scene 1
timeFrame: Baseline
measure: Saccade velocity - Indoor scene 2
timeFrame: Baseline
measure: Saccade velocity - Indoor scene 3
timeFrame: Baseline
measure: Saccade velocity - Outdoor scene 1
timeFrame: Baseline
measure: Saccade velocity - Outdoor scene 2
timeFrame: Baseline
measure: Saccade velocity - Outdoor scene 3
timeFrame: Baseline
measure: Fixation duration - Indoor scene 1
timeFrame: Baseline
measure: Fixation duration - Indoor scene 2
timeFrame: Baseline
measure: Fixation duration - Indoor scene 3
timeFrame: Baseline
measure: Fixation duration - Outdoor scene 1
timeFrame: Baseline
measure: Fixation duration - Outdoor scene 2
timeFrame: Baseline
measure: Fixation duration - Outdoor scene 3
timeFrame: Baseline
measure: Fixation frequency - Indoor scene 1
timeFrame: Baseline
measure: Fixation frequency - Indoor scene 2
timeFrame: Baseline
measure: Fixation frequency - Indoor scene 3
timeFrame: Baseline
measure: Fixation frequency - Outdoor scene 1
timeFrame: Baseline
measure: Fixation frequency - Outdoor scene 2
timeFrame: Baseline
measure: Fixation frequency - Outdoor scene 3
timeFrame: Baseline
measure: Pupil size - Indoor scene 1
timeFrame: Baseline
measure: Pupil size - Indoor scene 2
timeFrame: Baseline
measure: Pupil size - Indoor scene 3
timeFrame: Baseline
measure: Pupil size - Outdoor scene 1
timeFrame: Baseline
measure: Pupil size - Outdoor scene 2
timeFrame: Baseline
measure: Pupil size - Outdoor scene 3
timeFrame: Baseline
measure: Melanopic irradiance - Indoor scene 1
timeFrame: Baseline
measure: Melanopic irradiance - Indoor scene 2
timeFrame: Baseline
measure: Melanopic irradiance - Indoor scene 3
timeFrame: Baseline
measure: Melanopic irradiance - Outdoor scene 1
timeFrame: Baseline
measure: Melanopic irradiance - Outdoor scene 2
timeFrame: Baseline
measure: Melanopic irradiance - Outdoor scene 3
timeFrame: Baseline
measure: Photopic illuminance - Indoor scene 1
timeFrame: Baseline
measure: Photopic illuminance - Indoor scene 2
timeFrame: Baseline
measure: Photopic illuminance - Indoor scene 3
timeFrame: Baseline
measure: Photopic illuminance - Outdoor scene 1
timeFrame: Baseline
measure: Photopic illuminance - Outdoor scene 2
timeFrame: Baseline
measure: Photopic illuminance - Outdoor scene 3
timeFrame: Baseline
Secondary outcomes:
measure: Subjective scene ratings - Indoor scene 1
timeFrame: Baseline
measure: Subjective scene ratings - Indoor scene 2
timeFrame: Baseline
measure: Subjective scene ratings - Indoor scene 3
timeFrame: Baseline
measure: Subjective scene ratings - Outdoor scene 1
timeFrame: Baseline
measure: Subjective scene ratings - Outdoor scene 2
timeFrame: Baseline
measure: Subjective scene ratings - Outdoor scene 3
timeFrame: Baseline
measure: Geographical scene location - Indoor scene 1
timeFrame: Baseline
measure: Geographical scene location - Indoor scene 2
timeFrame: Baseline
measure: Geographical scene location - Indoor scene 3
timeFrame: Baseline
measure: Geographical scene location - Outdoor scene 1
timeFrame: Baseline
measure: Geographical scene location - Outdoor scene 2
timeFrame: Baseline
measure: Geographical scene location - Outdoor scene 3
timeFrame: Baseline
measure: Ambient temperature - Indoor scene 1
timeFrame: Baseline
measure: Ambient temperature - Indoor scene 2
timeFrame: Baseline
measure: Ambient temperature - Indoor scene 3
timeFrame: Baseline
measure: Ambient temperature - Outdoor scene 1
timeFrame: Baseline
measure: Ambient temperature - Outdoor scene 2
timeFrame: Baseline
measure: Ambient temperature - Outdoor scene 3
timeFrame: Baseline
Other outcomes:
Locations:
city: Tübingen
country: Germany
facility: Max Planck Institute for Biological Cybernetics
Study officials:
affiliation: Technical University of Munich & Max Planck Institute for Biological Cybernetics
name: Manuel Spitschan, PhD
role: PRINCIPAL_INVESTIGATOR
References: