What Are Some Considerations in Choosing Between a VISX, LADARVision, Technolas, or Allegretto LaserVision Treatment?
VISX is preferred 2:1 by laser vision surgeons in the U.S. over all other lasers combined. Some reasons for this include: 1) VISX has variable spot (rather than fixed spot) scanning capabilities allowing for faster treatment times and greater tissue preservation. 2) VISX has both active and passive 3-D eye tracking capabilities. ActiveTrak follows eye movements, and if the eye moves out of the safe zone (1 1/2 millimeters), the passive tracker pauses the laser and resumes treatment as soon as the eye is properly aligned. It also is the only laser to have iris registration which tracks the cyclotorsional movements of the eye and makes sure your custom treatment is properly aligned for best results. The eye may rotate up to 15 degrees between the wavefront exam and your lying down for the laser treatment–especially if the eye is dilated when the wavefront is taken as is the case in some non-VISX lasers. Iris registration takes a picture of the unique landmarks of your iris and then rota
