PerfectPulse Technology represents a new approach to laser vision correction. It accounts for speed, precision, and safety in the Allegretto Wave laser and offers improvements that are revolutionary 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 200 times per second. As a result, every laser pulse is completely controlled and accurate, achieving 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.

Allegretto Wave’s laser is essentially a precise, controlled beam of energy.To make sure that this beam never causes any sort of adverse effect on the cornea, Allegretto Wave’s PerfectPulse Technology™ places the laser pulses in such a way that only every fifth pulse overlaps. Not only does this preclude unwanted heating effects, it is one of the ways that Allegretto Wave achieves 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 Allegretto Wave procedure, the laser beam needs to be constantly and minutely adjusted to the position of the eye at any given time. Every 4-6 milliseconds, the eye’s location is measured and the internal mirrors of the Allegretto Wave are automatically aligned. Right before the pulse is released, a second check is made to confirm that the eye has not moved. This happens 200 times every second, once for every laser pulse released. 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.


Currently, the Allegretto Wave is the fastest vision correction laser available in the United States. At 200 laser bursts per second, it only takes about four seconds of treatment to correct one diopter. Of course, spending less time under the laser means less stress and discomfort for the patient.

Patients with myopia (near-sightedness) can determine their
approximate treatment time on the chart below:


*Times will vary depending on type of refractive error and the size of the treated optical zone.