CHALLENGING THIS WORLD RECORD

YOU NEED TO BEAT

3 millimeters

Rules

- Move one eye horizontally outward toward the ear and back to center; the result is how far the center of the pupil travels from its centered starting position
- Keep the other eye as still as possible throughout
- Measure against a millimeter ruler held just below the moving eye and visible on camera throughout
- Keep the head still and both eyes open
- Continuous, unedited close-up video with both eyes and the ruler clearly visible
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