There are three different to use when doing eye surgery; all of them with almost the same name: LASIK, LASEK and LASAK. The three surgery methods can be combined with two extra methods to give an even better result. The names of the two treatments are: Wavefront and Aspheric.
LASIK is the most popular of the methods. It is fast, effective and gentle. And complications using this laser surgery method are very rare. For most people, LASIK surgery will be a good method to improve their sight.
The LASIK operation is painless, and the sight will be improved in only a few hours. There are only a few side effects like dry eyes. The method can be used for near-sightedness until -12 and long-sightedness until +3.
The other surgery method called LASEK (or E-LASIK or ELSA) is great for people, who are only a little near-sightedness or and long-sightedness (from -2 to +2).
If you have thin corneas the LASEK surgery is a great method, because the laser surgery is made on the surface of the corneas. It also more gentle, if you have very dry eyes.
The newest type of laser surgery is called LASAK. The flap, which is cut off, is thinner than when doing LASIK surgery. That saves the corneal tissue and is therefore a better method for people with thin corneas.
The healing time is also shorter with LASAK than the other methods. The risks of complications are lower, and it is almost painless after the operation. The sight will also be steadier and the eyes will not be as dry.
The surgery result can be improved even more, if the methods are used in combination with the Wavefront method. The irregularities on the corneal are measured with a special instrument, and a kind of topographic map is constructed. Finally a computer calculates the correct settings for the laser surgery based on the specific eye.
The Wavefront method gives a more unique measurement of the eye. That gives an improved result and a better night sight. Astigmatism in the eyes will also be corrected in a better way.
Aspheric treatment is the newest step in eye surgery; and is used in combination with LASIK, LASEK and LASAK. The treatment takes into account that the cornea is not ball-shaped; but aspheric.
When using LASIK, LASEK or LASAK without Aspheric treatment, the eye will be more ball-shaped. That gives a reduced contrast ratio and a bad night sight. If the Aspheric treatment is used, the curve in the central part of the eye will be made larger (as it is in an untreated eye). This gives a much better result; sometimes even better than with contact lenses or glasses.
Martin Elmer is the editor of Laser oejenoperation. Here you can also read about Langsynethed.
categories: eye surgery,laser surgery,LASIK,LASEK,LASAK,Wavefront,Aspheric,cornea,short-sighted,long-sighted,dry eyes,complications
Tags: Aspheric, complications, cornea, dry eyes, eye surgery, LASAK, LASEK, laser eye surgery, Laser Surgery, LASIK, long-sighted, short-sighted, Wavefront