LCT Eyegaze Edge User Manual page 6

the pupil or the user's eyeglasses, change the user's location in the room or eliminate the source of
unwanted light by closing window shades, turning off the lamp, etc.
At the beginning of the calibration procedure, the screen displays the message:
A caregiver can initiate calibration by touching the "Start Calibration" cell, to bring up the first calibration
icon. (The icon may be a small yellow dot or an animated image.) Alternatively, the user can begin
calibration by looking down at the center of the camera lens to begin calibration. When calibration is
initiated, the system sounds a beep and a calibration icon appears at the first location on the screen. To
calibrate, the user looks at the center of the icon when it appears on the screen, then follows it as it
moves to a new location. He may relax and take his time. The calibration icon will not move until the
user has looked at it in its current position. The speed at which the calibration icon moves from location
to location is determined by how fast the user moves his eyes and adequately fixes his gaze on each
point.
Once the user has looked at the first calibration point on the screen, the camera angle and
focus range can no longer be adjusted. Don't touch the camera after calibration has begun or at
any time during Eyegaze use! You can move the screen up or down forward or back after
calibration in order to re-position it for Eyegaze use. Adjusting the camera at any time once
calibration has begun, or during Eyegaze operation, will prevent the user from running the Eyegaze
Edge accurately until he calibrates again.
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