VISX is used by more LASIK surgeons in the United States than all other excimer lasers combined. This is not surprising considering the numerous advantages VISX offers. VISX has been the trusted name in excimer lasers since LASIK surgery's earliest cases. The fact that they have been around since the beginning and are now on their fourth generation of excimer lasers is a testament to the superiority of this technology.

Unlike flying-spot lasers, the size of VISX's laser spot is variable. The spot size can vary from 0.65 to 6.5 mm. This allows the cornea to be treated with far more efficiency. Tracking is a critical element of an accurate excimer laser system. This refers to the laser's ability to follow minute movements of the eye. Patients' do not have to worry about moving their eyes during treatment if a good tracking system is being used. VISX's tracking system follows the eye in all 3 dimensions. Many other lasers track the eye in only 2 directions. For example, if the eye moves from side-to-side (x-axis) or up-and-down (y-axis) the laser will move with you. In addition to following the eye in these 2 directions, VISX 3-D Tracking also follows your eye if it move closer or farther away from the laser (z-axis).

Iris registration is another level of tracking offered only by VISX. This technology corrects for any minute rotational movements of the eyes which have been well-documented to occur. Click on Iris Registration on the sidebar to learn more.

Wavefront-guided customized laser treatments are based on the individual characteristics of the eye that is being corrected. A wavefront is a complex measurement of the unique way light behaves in each individual eye. It can be compared to a "fingerprint" of the eye. VISX's customized treatment are based on your individual wavefront. Other lasers claim to offer customization, but the treatments are actually "wavefront optimized." This refers to laser treatment software that has been designed with certain corrections pre-programmed, although a true and customized wavefront plan is not employed.