What is wavefront treatment?

Wavefront assisted customized LASIK is an exciting new laser vision correction method where not only are refractive errors corrected but a spot laser also removes tiny aberrations in the eye. reducing night vision problems and improving the quality of vision. In the hands of skilled surgeons this technique can help improve the outcome of LASIK. This cutting edge technology has been borrowed from astronomers, wherein an instrument called the aberrometer measures minute imperfections in the eye, so that they can be corrected during LASIK surgery. ." It creates a fingerprint of vision - a map of irregularities inherent to your visual system. To create the treatment plan, these patterns are compared to an ideal Wavefront map, and the computer designs a personalized treatment plan that is unique for your visual specifications. To put in simple way A machine called an aberromater picks up the minor "faults"
and discrepancies in the optical system of the eye. This data is
transferred to the computerized laser machine. The laser delivery is
designed in such a way that there minor " faults " are eliminated
along with the refractive error. This results in a superior aberration
free optical system giving super vision.

What are the advantages of wavefront treatment ( A-cat )?

With older lasers, only the spherical and cylindrical power could be corrected. Since an aberrometer can measure many different types of aberrations, in addition to the sphere and cylinder, surgeons can use it to correct many more aberrations. This extra measurement has inspired surgeons to go towards 20/10 vision. Even if the acuity is not pushed to 20/10, there is the benefit of increasing the contrast or the difference between the lighter and darker parts of anything that is perceived. This can be especially important at night, when the aberrations are particularly severe because the pupil is larger.

The A-cat, T-Cat and F-Cat procedures leads to more accurate vision correction, better night vision, greater predictability of the surgical outcome, reduced glare, enhanced contrast sensitivity, greater safety and efficacy.