An interventional study of Indoor vs. outdoor scenes in Light Sensitivity, sponsored by Technical University of Munich. Recruiting at 1 site in Germany. Open to participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-08-02.
Sponsored by Technical University of Munich · Not applicable, Interventional, and Basic science
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.
43 studies on the registry are indexed under Photophobia; 13 are open to participants now.
This study's planned enrollment of 24 is below the median of 43 across 36 interventional studies indexed under Photophobia.
Browse Photophobia studies →Technical University of Munich is the lead sponsor of 320 studies on the registry; 58 are open to participants now.
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Exclusion Criteria:
Other: Indoor vs. outdoor scenes
Light conditions in indoor (artificial light) and outdoor (daylight) settings
Saccade frequency - Indoor scene 1
Number per second \[n/s\]
Time frame: Baseline
Saccade frequency - Indoor scene 2
Number per second \[n/s\]
Time frame: Baseline
Saccade frequency - Indoor scene 3
Number per second \[n/s\]
Time frame: Baseline
Saccade frequency - Outdoor scene 1
Number per second \[n/s\]
Time frame: Baseline
Saccade frequency - Outdoor scene 2
Number per second \[n/s\]
Time frame: Baseline
Saccade frequency - Outdoor scene 3
Number per second \[n/s\]
Time frame: Baseline
Saccade amplitude - Indoor scene 1
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade amplitude - Indoor scene 2
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade amplitude - Indoor scene 3
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade amplitude - Outdoor scene 1
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade amplitude - Outdoor scene 2
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade amplitude - Outdoor scene 3
Mean angular distance traveled \[°\]
Time frame: Baseline
Saccade velocity - Indoor scene 1
Mean peak velocity \[°/s\]
Time frame: Baseline
Saccade velocity - Indoor scene 2
Mean peak velocity \[°/s\]
Time frame: Baseline
Saccade velocity - Indoor scene 3
Mean peak velocity \[°/s\]
Time frame: Baseline
Saccade velocity - Outdoor scene 1
Mean peak velocity \[°/s\]
Time frame: Baseline
Saccade velocity - Outdoor scene 2
Mean peak velocity \[°/s\]
Time frame: Baseline
Saccade velocity - Outdoor scene 3
Mean peak velocity \[°/s\]
Time frame: Baseline
Fixation duration - Indoor scene 1
Mean fixation duration \[s\]
Time frame: Baseline
Fixation duration - Indoor scene 2
Mean fixation duration \[s\]
Time frame: Baseline
Fixation duration - Indoor scene 3
Mean fixation duration \[s\]
Time frame: Baseline
Fixation duration - Outdoor scene 1
Mean fixation duration \[s\]
Time frame: Baseline
Fixation duration - Outdoor scene 2
Mean fixation duration \[s\]
Time frame: Baseline
Fixation duration - Outdoor scene 3
Mean fixation duration \[s\]
Time frame: Baseline
Fixation frequency - Indoor scene 1
Number per minute \[n/min\]
Time frame: Baseline
Fixation frequency - Indoor scene 2
Number per minute \[n/min\]
Time frame: Baseline
Fixation frequency - Indoor scene 3
Number per minute \[n/min\]
Time frame: Baseline
Fixation frequency - Outdoor scene 1
Number per minute \[n/min\]
Time frame: Baseline
Fixation frequency - Outdoor scene 2
Number per minute \[n/min\]
Time frame: Baseline
Fixation frequency - Outdoor scene 3
Number per minute \[n/min\]
Time frame: Baseline
Pupil size - Indoor scene 1
Mean pupil size \[mm\]
Time frame: Baseline
Pupil size - Indoor scene 2
Mean pupil size \[mm\]
Time frame: Baseline
Pupil size - Indoor scene 3
Mean pupil size \[mm\]
Time frame: Baseline
Pupil size - Outdoor scene 1
Mean pupil size \[mm\]
Time frame: Baseline
Pupil size - Outdoor scene 2
Mean pupil size \[mm\]
Time frame: Baseline
Pupil size - Outdoor scene 3
Mean pupil size \[mm\]
Time frame: Baseline
Melanopic irradiance - Indoor scene 1
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Melanopic irradiance - Indoor scene 2
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Melanopic irradiance - Indoor scene 3
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Melanopic irradiance - Outdoor scene 1
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Melanopic irradiance - Outdoor scene 2
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Melanopic irradiance - Outdoor scene 3
Irradiance \[W/(sqm\*nm)\]
Time frame: Baseline
Photopic illuminance - Indoor scene 1
Illuminance \[lux\]
Time frame: Baseline
Photopic illuminance - Indoor scene 2
Illuminance \[lux\]
Time frame: Baseline
Photopic illuminance - Indoor scene 3
Illuminance \[lux\]
Time frame: Baseline
Photopic illuminance - Outdoor scene 1
Illuminance \[lux\]
Time frame: Baseline
Photopic illuminance - Outdoor scene 2
Illuminance \[lux\]
Time frame: Baseline
Photopic illuminance - Outdoor scene 3
Illuminance \[lux\]
Time frame: Baseline
Subjective scene ratings - Indoor scene 1
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Subjective scene ratings - Indoor scene 2
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Subjective scene ratings - Indoor scene 3
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Subjective scene ratings - Outdoor scene 1
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Subjective scene ratings - Outdoor scene 2
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Subjective scene ratings - Outdoor scene 3
* Unabbreviated scale titles (1)., min. and max, values (2.), score assessment (3.): * 1. "How beautiful is this scene to you?" 2. "1 = not beautiful at all; 10 = extremely beautiful" 3. No better or worse outcome * 1. "How would you rate the brightness of this scene?" 2. "1 = dimly lit room; 10 = bright sunny day" 3. No better or worse outcome * 1. "How visually comfortable did you find this scene?" 2. "1 = No discomfort; 10 = Very uncomfortable" 3. No better or worse outcome * 1. "How would you rate the complexity of the scene (e.g. colour contrasts, different object identities, moving objects)?" 2. "1 = very simple; 10 = Very complex" 3. No better or worse outcome * 1. "How sleepy do you currently feel" 2. "1 = Extremely alert; 10 = Extremely sleep, can't keep awake" 3. Lower score is better
Time frame: Baseline
Geographical scene location - Indoor scene 1
Longitude and latitude \[°\]
Time frame: Baseline
Geographical scene location - Indoor scene 2
Longitude and latitude \[°\]
Time frame: Baseline
Geographical scene location - Indoor scene 3
Longitude and latitude \[°\]
Time frame: Baseline
Geographical scene location - Outdoor scene 1
Longitude and latitude \[°\]
Time frame: Baseline
Geographical scene location - Outdoor scene 2
Longitude and latitude \[°\]
Time frame: Baseline
Geographical scene location - Outdoor scene 3
Longitude and latitude \[°\]
Time frame: Baseline
Ambient temperature - Indoor scene 1
Temperature \[°C\]
Time frame: Baseline
Ambient temperature - Indoor scene 2
Temperature \[°C\]
Time frame: Baseline
Ambient temperature - Indoor scene 3
Temperature \[°C\]
Time frame: Baseline
Ambient temperature - Outdoor scene 1
Temperature \[°C\]
Time frame: Baseline
Ambient temperature - Outdoor scene 2
Temperature \[°C\]
Time frame: Baseline
Ambient temperature - Outdoor scene 3
Temperature \[°C\]
Time frame: Baseline
Plan to share: Yes
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