The STAR S4 IR Excimer Laser System integrates data collected by the WaveScan WaveFront^® System to deliver precise custom ablations.

• Iris Registration (IR) uses multiple matching reference points from the iris to capture and compensate for torsional angle, as well as pupil centroid shift
• IR provides greater alignment accuracy with sub-flap iris imaging
• IR also allows for instant re-registration in the event of intraoperative cyclotorsional movement

Variable Spot Scanning (VSS™) And Variable Repetition Rate (VRR^®) Technologies

VSS technology, available only from AMO^®, ensures the intricate shapes reconstructed by the Fourier wavefront algorithm are precisely ablated. VRR technology delivers proprietary algorithms that vary the laser's pulse rate. By continually changing the size and placement of the beam, VRR technology provides:

• The ability to deliver Fourier shapes with optimized ablation time while ensuring minimal thermal impact on the cornea
• More accurate reconstruction of the wavefront profile and intricate ablation shapes
• Faster treatment times
• Smoother ablation profiles

Combined, VSS and VRR technologies:

• Minimize thermal effects and optimize clinical results
• Achieve the ideal treatment speed by mixing the pulse sizes, distribution and repetition rate
• Provide potentially better overall outcomes, including night vision quality

Laser assisted in-situ keratomileusis (LASIK) can only be performed by a trained physician and is specified for reduction or elimination of myopia, hyperopia, and astigmatism as indicated within the product labeling. Laser refractive surgery is contraindicated for patients: a) with collagen vascular, autoimmune, or immunodeficiency diseases; b) who are pregnant or nursing women; c) with signs of keratoconus or abnormal corneal topography; d) who are taking one or both of the following medications: Isotretinoin (Accutane) and Amiodarone hydrochloride (Cordarone). Potential side effects to laser refractive surgery may include glare, dry eye, as well as other visual anomalies. LASIK requires the use of a microkeratome that cuts a flap on the surface of the cornea, potential side effects may include flap related complications. Consult with your eye care professional and Patient Information Booklet regarding the potential risks and benefits for laser refractive surgery, results may vary for each individual patient.

Restricted Device: U.S. Federal Law restricts this device to sale, distribution, and use by or on the order of a physician or other licensed eye care practitioner. U.S. Federal Law restricts the use of this device to practitioners who have been trained in its calibration and operation and who have experience in the surgical treatment and management of refractive errors.