What is Wavefront technology?
Your eye (and how it sees the world) is like a fingerprint – truly distinctive and personal. It is distinctive because light is scattered unevenly to form a pattern that is unique to your eye and because your cornea has a unique shape. Wavefront assessment involves an extra diagnostic screening process extensive enough to let the surgeon see every individual patient’s unique optical characteristics.
Wavefront software combines data from two different types of diagnostic equipment, then programs the laser with your unique treatment, based on this data. Wavefront provides the most technologically advanced measurement of scattered light errors (defects) known as high order “aberrations” in the eye. Wavefront technology is based on the principle that if an eye had no imperfections at all, light passing through it would not scatter. But, because no eye is perfect, light scatters to form distinct patterns, called a wavefront. Wavefront technology measures your personal/individual patterns and thus allows the surgeon to plan a treatment that exactly matches individual vision errors.
Although most people do not have significant abberations, wavefront can be indicated in approximately 15% of patients to enhance their outcome. This provides less potential for night vision disturbances, halos and glare. Your age or glasses prescription have no bearing on potential for having high order abberations. The size of one’s pupil does have a correlation with higher order abberations, as they tend to be more peripheral in the optical system.
Wavefront is a “specialized treatment”, with additional costs associated to the procedure. You must have a full evaluation to identify if you are a candidate for this technology. It is not for everyone.
Bausch & Lomb’s Z100 Custom Wavefront
Zyoptix Workstation Bausch & Lomb’s Z100 Custom Wavefront LASIK and PRK surgery is the newest and most refined method of applying the excimer laser treatment to the eye. Wavefront incorporates data from an instrument called an Aberrometer “wavefront analyzer”. It can be used to correct high order aberrations or can be used to save tissue thus making the difference between PRK and Wavefront LASIK. It can also be used for people who don’t have enough corneal tissue for conventional PRK, thus having a Wavefront PRK procedure.
Wavefront LASIK or PRK with the Bausch & Lomb’s Z100 incorporates a faster eye tracker and a smaller beam on the B&L’s Z100 Laser, thus saving corneal tissue while correcting high order aberrations as well. The Aberrometer collects information that can be put on a computer disk that can be installed into the laser thus giving you personalized custom treatments.
At Coal Harbour Eye Centre we have used the Wavefront platform of many different lasers used in British Columbia and have found that the Bausch & Lomb’s Z100 to be the best in our hands.
The Bausch & Lomb’s Z100 Diagnostic Workstation
Unites two trusted technologies: Z100 Wavefront Aberrometer and Orbscan ll Segment Analysis System. Individually they supply critically important data; together they maximize the refractive results.
OPD Scan technology from the Nidek company is another Aberrometer we have at Coal Harbour Eye Centre with which we compare the results from the B&L Diagnostic Workstation to ensure they are accurate and repeatable, and not subject to observer or technician error.