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Envision Laser Centers

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Envision Laser Centers Technology

How Can Different Lasers Affect Your LASIK Procedure?

To be direct, all lasers simply are not the same. Just as there are distinct differences in price and performance of automobiles, each excimer laser has its own advantages and disadvantages that usually are only distinguished by a skilled surgeon with experience on a specific laser platform. The best way to determine the effectiveness of a specific laser is by examining patient outcomes.

Dr. Patel and his laser technician are familiar (and certified) on 4 different laser platforms. Experience using these lasers is the only way to really know the difference each one can make when treating any individual. Always make sure the lasers are equipped with the newest upgrades available. The newest technology improves performance and leads to better results for the patient.

Finally, lasers that are kept in a climate controlled (temperature and humidity) operating room, are more dependable than mobile units or lasers that are shared by numerous doctors. Envision Laser Centers owns our lasers that are always kept in a climate controlled operating room. We do not let outside surgeons and inexperienced staff use this equipment. Our lasers are kept under corporate service contracts and routinely serviced by engineers to ensure the best performance for our patients.

Introducing the only Custom Laser Platform clinically proven to reduce night time glare in most individuals.Technolas 217z 100hz Zyoptix system with ACE tracking.

Baush & Lomb Technolas 217z 100hz Zyoptix System
The Bausch & Lomb Technolas® 217z 100hz Zyoptix(TM) System for Personalized Laser Vision Correction is the world's leading excimer laser for personalized vision correction. Its innovative "flying spot" technology produces an extremely smooth corneal surface.

The Technolas® 217z 100hz Zyoptix(TM) System uses a state-of-the-art feedback mechanism that helps to ensure every pulse is placed as prescribed. The Technolas 217z wavefront-guided laser is designed ergonomically for LASIK which means greater comfort for you and greater flexibility for your surgeon. Learn more about the Bausch & Lomb Zyoptix(TM) System capabilities to provide customized laser treatment that is unique to each eye.

The only platform clinically proven to reduce night time glare in most individuals



According to a recent announcement from Technolas Perfect Vision, the U.S. Food and Drug Administration has approved a first of its kind technology for LASIK eye surgery, known as Advanced Control Eyetracking (ACE), for the Technolas LASIK platform.

Eyetracking allows lasers used during LASIK surgery to compensate for eye movements during the procedure, thus adding an important level of assurance. However, no eyetracker has been able to adjust for subtle rotations of the eye that can occur during the laser treatment – that is until now. This new eyetracker locks on to the eye’s unique iris pattern just before the laser treatment begins, and then monitors the pattern throughout the procedure. When rotation of the iris pattern is detected during the treatment the direction of laser pulses is nearly instantaneously adjusted accordingly. This ensures that each laser pulse of the LASIK treatment is delivered to its intended location on the cornea.

“Several published medical studies involving almost 2,000 LASIK cases clearly demonstrate the benefit of the comprehensive, active, rotational eye tracking afforded by ACE technology,” according to Dr. Scott MacRae, Professor of Ophthalmology at the University of Rochester in New York. “This technology is one of a kind. Rotation of the eye during LASIK could result in less than full correction of astigmatism, which is very common among LASIK patients, and an increased chance of the need for a secondary enhancement procedure.”

No other LASIK system available in the US can compensate for eye rotation during the LASIK treatment. Both the Technolas ACE and VISX S4 IR (Abbot Medical Optics, Santa Ana, CA) trackers compensate for the cyclorotation of the eye that can occur between the sitting position during critical diagnostic measurements and lying down on the LASIK bed. However, only the Technolas ACE tracker can adjust the delivery of laser pulses in response to eye rotation during the LASIK treatment. Further, the Technolas ACE system is enabled for both conventional and custom wavefront-guided LASIK treatments, while the VISX S4 IR tracker cannot adjust for cyclotorsion associated with conventional LASIK treatments.

The Wavelight system employs a four-point LED illumination pattern that the patient views, known as NeuroTrack™, which the company claims prevents any rotation during the procedure; however, no clinical data is available to confirm that this is indeed the case. In fact, a recent large study by Emory University using the Wavelight laser demonstrated that astigmatic eyes were nearly twice as likely as non-astigmatic eyes to require a touch up or enhancement procedure following LASIK. Increased enhancement rates among astigmatic eyes could be indicative of eye rotation during the treatment that goes unchecked.

This new eyetracker also doubles the speed of tracking so as to allow the laser to rapidly adjust to the eye’s movements; response time with ACE is now under 7 milliseconds, or 0.007 seconds. ACE also adjusts for the pupil center shifting that can occur between light and dark settings, critical to the proper centering of customized LASIK treatments over the pupil.