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

Technical University of Munich

Status: Enrolling

Conditions: Light Sensitivity

Treatments: Other: Indoor vs. outdoor scenes

Study type: Interventional

Funder types: Other

Identifiers

NCT05971238

MPI-TSCN-2023-NATURALEYE

2023-231-S-KH (Other Identifier)

Details and patient eligibility

About

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.

Enrollment: 24 estimated patients

Sex: All

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Basic Science

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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24 participants in 1 patient group

Eye-tracking, pupillometry and scene rating indoors & outdoors

Experimental group

Treatment:

Other: Indoor vs. outdoor scenes