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3D Active Trak is a technology that is exclusively available on the VISX STAR S4 IR excimer laser, which is one of the major components of the iLASIK system. Using this technology, the doctor can track movements of the eyes in all three dimensions so that laser beams will accurately hit the parts of the eye that need treatment. Through this, optimal results are achieved.


The fact that the human eye is constantly moving must be considered for precise and accurate laser vision treatment. Failure to apply laser on the exact spot of the eye can cause damage and cause the patient to suffer from blurry and distorted vision. This is the reason why we use VISX STAR S4 IR with 3D Active Trak Technology. The tracking system enables the laser to detect eye movements in three dimensions. As a result, the laser beam is accurately delivered even if the patient moves.

By Amjad Khokhar