The Allegretto Wave Eye-Q laser allows your surgeon to track your eyes for faster and more accurate surgery. This type of laser is used in wavefront LASIK or wavefront-guided LASIK. It takes 3D measurements of how your eye processes images. These images guide the laser in reshaping the cornea, producing precise and individualized vision correction. This technology improves how much you can see (visual acuity measured by the standard 20/20 eye chart) and how well you can see in terms of contrast sensitivity and fine detail. To understand this, imagine a 3-D map that demonstrates irregularities in the way your eye processes images. These irregularities are unique and exist in addition to nearsightedness, farsightedness, and astigmatism. Information contained in the 3-D map guides the laser in customizing the treatment to reshape the corneal surface, so these unique irregularities are custom corrected.