PerfectPulse Technology™ for laser vision correction accounts for much of the speed, precision, and safety of the WaveLight® EX500 excimer laser and offers improvements in the field. Smart energy control measures and adjusts energy levels in the laser pulse from creation to delivery. High-speed eye tracking charts the eye’s movement 500 times per second. As a result, every laser pulse is completely controlled, allowing for the most accurate level of correction possible.
Smart Energy Control
You can have peace of mind that the amount of energy in the laser has been calibrated to exactly the right level. After the beam has been created, it passes through three checkpoints on its way to your eye. At each of these points, the energy level is checked and adjusted if necessary, ensuring that the beam is perfectly attuned at its destination.
The WaveLight® EX500 excimer laser is essentially a precise, controlled beam of energy. The laser employs a proprietary overlapping method to ensure accurate laser placement, and is one of the ways that WaveLight® EX500 excimer laser is able to achieve a rounder, more natural corneal surface than many other lasers used for vision correction.
Eye Tracking Technology
Due to the remarkable speed of both the eye and the WaveLight® Ex500 procedure, the laser beam needs to be constantly and minutely adjusted to the position of the eye at any given time. Every two milliseconds, the eye’s location is measured and the internal mirrors of the WaveLight® EX500 are automatically aligned. Just before the pulse is released, a second check is made to confirm that the eye has not moved. This happens 500 times every second, once for every laser pulse. If, at any time, the eye moves too quickly to be measured or moves out of range, the laser will stop and wait for the eye to move back into position.
The WaveLight® Refractive Suite is the fastest refractive surgery platform available in the United States, and we are very proud to have it here in Pittsburgh. At 500 laser bursts per second, it takes only about 1.4 seconds of treatment to correct one diopter. Of course, spending less time under the laser means less stress and discomfort for the patient.