The VISX Star S4 IR is the first laser treatment with Automated Iris Registration (IR); a non-contact method for aligning and registering your procedure. IR correctly centres and aligns the treatment, independently of pupil migration while compensating for eye movement, providing a more precise placement on the corneal site.
The STAR S4 IR Excimer Laser System exclusively features VSS Refractive technology (Variable Spot Scanning) and VRR (Variable Repetition Rate) pulse-packing algorithm. The VSS Refractive technology produces variable beam sizes from as small as 0.65 mm up to 6.5 mm, while VRR varies the laser's repetition rate from 6 Hz to 20 Hz.
By continually changing the size and placement of the laser beam, the STAR S4 IR Excimer Laser rapidly delivers the precise ablation pattern required, significantly reducing ablation time, while minimizing thermal effects on the cornea.
ActiveTrak 3-D Active Eye Tracking with automatic centering tracks eye movements in 3D along the X, Y and Z axes. This means that not only side-to-side and backwards and forwards movements of your head are accommodated - but up and down movements are also monitored. This helps your surgeon perform an extremely precise positioning of the corrective laser.
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