Enhanced Eye Tracking - Fixed Vertical Movement

Accuracy: --%
Status: Waiting to start
Debug: EyeX: 0, EyeY: 0
Left: (0,0) Right: (0,0)
Instructions: 1) Click "Start Camera" 2) Position your face in the green box 3) Click "Start Calibration" 4) Look at each green dot 5) After calibration, the red/blue dots will follow your gaze.
Note: Vertical movement now tracks eyeball movement, not eyelid opening/closing.