The ActiveTrak VISX is unique because it features both a broad and incorporates a scanning laser beam. A wide beam allows the first stage of reform the surface of your eyes, while the beam scans do more detailed work is needed to smooth and polish your newly shaped cornea. After a combination of options (known as “Variable Spot Scanning”) rise (soon), the rate of refractive surgery can be performed. ActiveTrak system uses infrared lasers to the video on your small monitor eye movement during surgery.

Many experts prefer ActiveTrak VISX LASIK, because of its ability to move your eyes in three dimensions (not just on the side-to-side and the up-and-down LADARVision, but also follow the track caused by the movement of your breathing, your body if it moves a little in the vertical direction). In addition, operations performed ActiveTrak faster than those done with LADARVision, and no need for pupil dilation from other lasers is required.

LADARVision tracking technology was originally developed in a joint effort between the National Aeronautics and Space Administration (NASA) and the Department of Defense Ballistic Missile Defense Office satellites and spacecraft docking. Using a small radius of less than 1 mm wide (smaller than the width of a human hair), a computer quickly move around your cornea in a pattern of small, non-sequential, overlapping areas.

LADARVision 4000 measuring eye position 4,000 times per second and is laser hair with this position. Built-in tracker automatically follows any eye movements and correcting any eye movement during the procedure. This reduces the anxiety associated with eye movements during surgery because the laser and tuning fits in between each pulse, to guide the placement of beams with accuracy.

Some experts believe that video-based tracking system (as used by ActiveTrak) has not proven that the speed they need to be sporadic, jerky, involuntary eye movements have followed, while the LADARVision (available for long) is clear.