Intermediate Visual Space Perception

This study examines how people perceive distances and locations of objects in the space just in front of them (called intermediate visual space — roughly arm's length). Researchers use eye tracking, virtual reality, and other tasks to study how the brain builds 3D maps of the nearby world, which has applications for understanding visual impairments and improving assistive technologies. You may be eligible if: - You are between 18 and 40 years old - You have normal or corrected-to-normal vision (at least 20/20) - You have good stereo (depth) vision (stereo acuity less than 20 arc seconds) You may NOT be eligible if: - You have a self-reported history of eye or vision disease - You have physical movement restrictions that would prevent study tasks - You are pregnant (due to the time commitment involved) Talk to your doctor to see if this trial is right for you.