The Lasik surgery is designed to correct the vision of its patients. The most vital part of the surgery is the correlation between the information related to the patients’ visual system and the Lasik laser. The flap modeling by cutting patients’ cornea is designed to meet patients’ needs. This brand new technology is the best technique to gather all this crucial information.
Introducing the Wavefront Technology
Wavefront is a technology aiming at providing a good measure of refraction at various spots belonging to our eyes as a light source is traversing it. The process outputs a map of artifacts which acts as a fingerprint of patients’ eye due to the uniqueness to the patients.
Refraction can be affected by some conditions related to the cornea. For instance high order aberrations have always been related to astigmatism. A correction of these aberrations will definitely improve the outcome of the surgery. Results such as an improvement factor of 20/20 can then be achieved. Wavelength technology reduces the possibility of losing best corrected vision or visual quality as well as night vision. Indeed, clinical surveys clearly revealed that about 80 of Lasik patients recorded a 20/20 vision.
Moreover, Wavefront technology can be used to reveal good candidates of Lasik surgery. For bad Lasik candidates, the surgery can decrease existing visual problems.
Wavefront Technology Applications
There are two types of corneal abnormalities: cylindrical and spherical. Astigmatism is caused by a cylindrical abnormality whereas nearsightedness (also called myopia) and farsightedness (also hyperopia) are both caused by spherical abnormality.
Wavefront Technology when properly used can reveal an infinite many abnormalities. This is done by making use of a fixed objective along with an input laser beam. This beam creates light, which in turn is a wavefront sensor aiming at working out the slope of the wavefront as it quits. The dedicated software then works out the excimer ablation’s properties.
The visual fixed objective is then used to aid the patient keep the correct view while the measurement is being computed. The laser beam will sparkle into the patient’s eye when she fixates.
When the laser beam goes into the eye, it generates a wave front having a planar surface. With a flawless eye, an undistorted wave front will reflect back. In practice, this beam of light will travel through an imperfect crystalline lens. The light then traverses a distorted cornea as well as other sections of the eye. The combination of all these will allow the wave front to get distorted bringing about substantial amount of data to find out the exact form of the cornea. The wave front is used to detect any abnormalities related to the eye in order to transform the cornea.
At the beginning of Wavefront Technology
The Wavefront Technology was created very long time ago and is used nowadays to help correct the human vision. Astronomers were the pioneers in using this technology especially for enhancing the vision in their telescope devices for similar purposes. As soon as the mirror responsible of reflecting gets distorted, it can be tweaked with available data. These data sets are also used to get rid of abnormalities such as our atmosphere. There is analogy between this process and the one related to our eyes.
The different options of the Wavefront technology
In the US, there are basically 3 wavefront vendors namely CustomVue (Visx S4 laser), CustomCornea (Alcon LADARVision laser), and Zyoptix (Bausch & Lomb Technolas 217z laser). Any vendor can make a suitable prescription for a given patient.
The Wavefront technology is a brand new technology aiming at creating precise and unique prescriptions for patients undergoing the Lasik surgery. With this Technology, Lasik patients are more likely to experience a successful surgery.
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