👁️‍🗨️Eye Tracker Calibration

1

Initial Setup

The first screen will display two white circles in a black box; these represent the participant’s eyes.

• Ensure the distance shown at the bottom of the box is between 60–70 cm.

• Instruct the participant to sit comfortably and move their chair forward/backward to reach the correct distance. Do not move the monitor forward/backwards.

2

Eye Detection

Wait until the eye tracker detects both eyes.

• Inform the participant that on the next screen, a red dot will appear, which they should follow with their eyes. Have them press "Enter" to begin.

• Avoid looking at the eye tracker during this step.

3

Calibration Check

The next screen will display white circles, each with green lines or dots.

• Confirm that each circle contains a green line or dot, and that no lines extend outside the circles.

• If calibration looks good, select “Accept” to start the task. If not, choose “Recalibrate” and repeat the process.

If you are unable to achieve a good calibration after a few attempts, proceed with the task and make note in the log book.