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