Providence Eye & Laser Specialists is proud to demonstrate our continued leadership role in laser vision correction by providing the latest technology to the region.

LASIK is a two-step procedure where a flap of corneal tissue is created, then the underlying tissue is reshaped with a laser. At Providence Eye, Dr. Mozayeni utilizes the WaveLight FS 200 Laser for making the flap and this complementing WaveLight Allegretto Eye-Q Laser to reshape the cornea. This is the marriage of the two best FDA-approved lasers available. Dr. Mozayeni is the only LASIK surgeon in the Charlotte region to offer this unique LASIK technology combination.

The Advantages of the Allegretto Eye-Q Laser

  • Maintains the natural shape of the cornea for most patients resulting in the best vision possible.
  • The most sophisticated eye tracker utilizing 3 infra-red cameras to track eye movement during the procedure at a rate of 400 frames per second! Other eye trackers track at a rate of 200 frames per second and others at only 60 frames per second.
  • The fastest laser available in the United States.

WaveLight was the first company to introduce high-speed laser vision correction in the United States. Now, the Allegretto Wave Eye-Q Laser takes the technology one step further with the fastest excimer laser system available today in the U.S. Thanks to the incredible power of the laser, many people can have their vision corrected in as little as eight seconds or faster. At the same time, the Allegretto Eye-Q delivers superior results with less risk of side effects. Predictable and optimal results are what Dr. Mozayeni can deliver with the use of these two lasers.

So what makes the Allegretto Eye-Q Laser so special?

Perfect Pulse™

PerfectPulse Technology™ ensures safe and precise work on your eyes. Each ultra-thin laser pulse is used to sculpt the corneal surface of the eye with the utmost accuracy. The high-speed eye tracker follows the eye’s fastest movements, checking the eye’s positions 400 times per second while ensuring an accurate placement of each pulse on the cornea. In addition, an integrated crossline projector provides the surgeon with an exact alignment of the eye’s position, making the Allegretto Eye-Q one of the safest, most effective optical lasers currently available. PerfectPulse Technology™ represents a new approach to laser vision correction. It accounts for much of the speed, precision and safety of the Allegretto Eye-Q laser and offers improvements that are revolutionary in the field. High-speed eye tracking charts the eye’s movement 400 times per second so the surgeon cannot correct your vision until your eye is in the exact, perfect placement. 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 the beam is perfectly attuned at its destination. The Allegretto Eye-Q laser is essentially a precise, controlled beam of energy. The laser employs a proprietary overlapping method to ensure accurate laser placement, and represents one of the ways that Allegretto Wave Eye-Q 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 Allegretto Eye-Q Laser, the laser beam needs to be constantly and minutely adjusted to the position of the eye at any given time. Every four to six milliseconds, the eye’s location is measured and the internal mirrors of the Allegretto Eye-Q are automatically aligned. Just before the pulse is released, a second check is made to confirm the eye has not moved. This happens 400 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.


Currently, the Allegretto Eye-Q is the fastest vision correction laser for LASIK available in the United States. At 400 laser bursts per second, it takes only about two seconds of treatment to correct one diopter. Of course, spending less time under the laser means less stress for the patient and a potentially better outcome.

Wavefront-Optimized and Wavefront-Guided Technology

One of the most innovative features of the Allegretto Eye-Q is that it is capable of BOTH Wavefront-optimized and Wavefront-guided treatments. Wavefront-optimized technology was released more recently and automatically compensates for the curvature of the cornea. In earlier laser correction systems, the optical zone, or area of correction, was centered on the front of the cornea; the result was a flattened circular area that ended with an abrupt edge, possibly causing unwanted side effects like poor night vision, glare, and halos. The Allegretto Eye-Q changes all that. The Allegretto Eye-Q sends extra pulses to the peripheral corneal area in order to compensate for the angle of the laser beam. In this manner, the aspherical shape of the cornea is preserved to a degree that older lasers simply could not achieve. This compensation, combined with the incredibly small, 1mm size of the laser, produces a smooth, effective optical zone that can only improve results and minimize side effects. The Allegretto Eye-Q also can be used to perform a Wavefront-guided correction utilizing aberration data (visual imperfections) in those individuals that would benefit from such a correction. This technology is similar to what was originally introduced as CustomVue on the VISX laser in 2003.

Large Optical Zones

The Allegretto Eye-Q is capable of producing some of the largest available optical zones. This zone refers to the portion of the cornea that has been corrected by the laser. A larger optical zone is especially important for night vision and for patients with very large pupils. If a patient’s pupil is larger than the optical zone, they may experience poor peripheral vision, poor night vision and a higher than normal incidence of “halos” and glare. In the past, this has been one of the biggest drawbacks to conventional laser correction surgery. Wavefront-optimized technology built into the Allegretto Eye-Q addresses this limitation.

Better Night Vision and Glare Control

At night and in dark conditions, the pupil becomes larger to permit the maximum amount of light to enter the eye. Laser vision correction needs to take this fact into account. If the optical zone is smaller than the size of the pupil at its largest, there is a possibility that the patient will experience poor night vision or problems with glare and halos around bright objects, such as oncoming headlights. Allegretto Eye-Q technology is able to produce a larger optical zone, virtually eliminating glare and night vision problems associated with older generation lasers.

This amazing technology in conjunction with an experienced cornea trained LASIK surgeon is what creates predictable excellent results. The Allegretto Wave Eye-Q Laser is FDA-approved for virtually all corrections, including farsightedness, nearsightedness and large amounts of astigmatism.

Dr. Mozayeni is the first and only LASIK surgeon in the Charlotte region to offer All-Laser Blade Free LASIK utilizing these two complimenting FDA-approved lasers: the WaveLight FS 200 and the WaveLight Allegretto Eye-Q Laser. His experience mixed with this technology far exceeds any other surgeon in the area.

WaveLight Allegretto Eye-Q Laser Videos