Excimer Laser
For all of us and a full sharp vision is very important. However, the vast majority of society, which affects vision in myopia, hyperopia or astigmatism are refractive errors that can be defined as. These are usually quite so are closely related with genetic predisposition, family history is one of the fundamental factors in the presence of such defects. Although still rare, refractive errors developing in time due to some environmental factors (school-age such as myopi) can be seen.
With laser treatment of refractive errors with a history of almost half a century and is a surgical technique that has been applied to millions of patients all over the world. The basic aim in this intervention by means of the refraction of the cornea of the eye by changing the laser power is the correction of refractive errors. Different methods for different types of refractive errors may be preferred. As in all areas, has led to advances in technology and medicine advances in this field. Nowadays, starting with micro blades with laser corneal incisions can be applied in an almost perfect way.
Different types of defects and breaking different eye structures that stand out although they vary according to the method that can be used in laser and nowadays are the main methods.
PRK (Photorefractive Keratotomi)
The outermost layer on the surface of the cornea (corneal epithelium) is applied by laser peeling. The goal is to eliminate refractive error by changing the curvature of the cornea. One of the methods is applied first. Although protection is applied on the surface of the cornea by removing tissue retained with contact lenses, the first day can be quite painful. In another method called Lasek, this outer layer is removed and placed back in a special way.
Lasik
Developed after PRK and now the world's most widely applied method. Cut at a certain thickness of the cornea and the upper leaf surface in the form opens. Dec treatment with laser is applied to the layer, and the slope of the cornea is changed in the desired manner. Leaf-shaped drop, however, are cut and removed, is placed back section that are not. Any stitches are not used.
Tap the top closes with the pain after the operation because of the treated area is covered almost never happens. Quite comfortable and fast healing method. The cornea is prepared, prepared with a femtosecond laser microkeratome we called this layer, such as a micro knives can be created with. When the desired depth is created with a femtosecond laser and the sharpness can be created in a perfect way.