Wavefront Prk vs. Conventional Lasik
The primary difference between wavefront prk or wavefront lasik and conventional lasik or prk is the system employed to map the surface of the eye and in turn guide the laser. Wavefront is very accurate and can result in better vision, but is not always necessary. The wavefront technology can be used with any laser technique, Lasik, Epi-Lasik, PRK, or Lasek.
Wavefront technology is not a new science at all. It has been around for a very long time. Astronomers have used wavefront technology to adjust the optics of telescopes for years. The earth’s atmosphere causes aberrations which are eliminated by adjusting the relecting mirror within the telescope. Wavefront data is used to do this. What is new however, is the use of wavefront technology to shape the cornea of the human eye.
Think of the eye surface (cornea) as a dome over which an imaginary grid has been placed. Where the dome is uneven, the grid sinks or rises accordingly. Now, the grid is raised off the eye, and the high points or low point are recorded so that the laser knows precisely what needs to be removed to make a perfectly shaped dome.
By having a cornea that is perfectly spherical, the light entering the eye will focus on a single point at the back of the eye. This single focal point as opposed to several focal points is what causes clear vision instead of a blur. At night, this becomes even more apparent.
In short, wavefront technology maps the aberrations of the cornea. The data is then sent to the tool (laser, prk, lasek, lasik, etc.) that will do the ablation (removal of eye tissue.) A wavefront prk evaluation is well worth the effort prior to making a decision about your surgery.
There are many san Jose lasik doctors that can explain the acute differences between prk vs lasik, lasek vs lasik, and even the differences of prk laser surgery and simple prk surgery. So, if you have astigmatism or are seeking lasik monovision, be sure to consult with your doctor before commiting to any type of lasic surgery. And, as always be sure to check back often to San Jose Lasik
for more up to the minute information.
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