An EyeLink Portable Duo Tutorial: Running an Experiment
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2016-2017 SR Research Ltd.
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Target is Good
Target angle too steep to be
recognized properly
Figure 3-5: EyeLink Remote Target Placement
Adjust the position/angle of the eye tracker so that the eyes appear in the
center of the global view of the camera image. If tracking binocularly, a dotted
vertical line will be drawn centered on the target sticker - make sure the target
sticker is placed on the forehead between the two eyes. In the global view
window of the camera image (Host or Display PC), click on top of the tracked
eye(s). To obtain the sharpest image of the participant’s eyes, the camera
should be focused by rotating the focusing wheel (installed at the underside of
the eye tracker - about 3 cm from the front and 4 cm from the left side of the
unit). The experimenter can access the control by placing one hand under left
side of the camera, with thumb on top of the unit. Be sure the hand is not
blocking the optical window on the front of the unit. Feel with the index finger
for a slot with a recessed ribbed wheel. Use the index finger to push the wheel
left or right slightly, until the best focus is achieved. Look closely at the eye
image on the zoomed view while adjusting the focusing wheel until the eye
