The Eyetracker
This highly sophisticated safety device tracks tiny eye movements and guides the laser to follow them. During treatment, your eyes make small movements almost undetectable to the human eye. The Eyetracker ensures that the laser follows these small movements. If the movement is too large for the laser to place the beam accurately, the Eyetracker will force the laser to stop until the eye is in the correct position again.
The very fast reaction time (10.8 milliseconds - faster than you can blink) ensures that every laser pulse stays focused on and placed precisely where it should be to accurately reshape your cornea.
Multi-Dimensional Eyetracker (only available in the new Zyoptix 100 System)
The new Multi-Dimensional Eyetracker on the Zyoptix 100 system has a few additional features. Whilst it still compensates for the undetectable small movements and/or stops laser from firing when the movement is too large large and target becomes out of range, it also offers:
- A faster reaction time of 6.6 milliseconds.
- The ability to not only track movements in the horizontal (x-plane) or vertical (y-plane) dimension, but also in the 3rd dimension (z-plane)
- The ability to compensate for more complex movements of the pupil and eye. In a small number of cases, pupils dilate/open up unevenly (called ÔPupil ShiftÕ) or eyes turn off-axis when you lie flat (called ÔcyclotorsionÕ). The Eyetracker compensates for this automatically.