The lasik is the reference surgical technique with predictability that has so far been unmatched by other refractive surgery techniques for the correction of the main visual defects, namely myopia (up to 12 diopters), hypermetropia (up to 6 diopters), astigmatism (up to 6 diopters), and also some presbyopia (presby-lasik).
Lasik operations allow the treatment of both eyes on the same day in just 1/2 minute per eye, are completely painless and give an almost immediate visual result.
This is a refractive surgery procedure involving treatment with an Excimer Laser: a cut is made in the thickness of the cornea under a protective strip of corneal tissue.
The Excimer laser thus makes it possible to modify the surface of the cornea with micrometric precision in order to correct most refractive errors: myopia, hyperopia, astigmatism and presbyopia.
Different laser eye surgery techniques are available, all of which are explained during the pre-operative visit:
Classic Lasik
LASIK is a laser eye surgery technique that provides excellent results and allows for rapid visual recovery, but requires the creation of a corneal flap using a microkeratome blade. This technique carries risks, although rare, but we only use the femtosecond laser for our corneal flaps.
Moria One Use Plus microkeratome
It allows for ultra-thin cuts (90 microns thick).
The Moria One Use Plus Micro Keratome is superior to other Lasik equipment due to its safety in terms of asepsis. In fact, all of its consumables are single-use.
At the Centre Vison Laser Hauts-de-France, we do not use microkeratectomies..
Femtosecond Lasik
The femtosecond laser allows for the creation of a thin, reliable, and reproducible flap. This procedure is 100% laser. The main advantages of this laser eye treatment are faster visual recovery, reduced procedure time, increased safety during surgery, and even more precise procedures, as well as a reduced risk of dry eye.
After the flap is created, the visual defect correction must be performed with an Excimer Laser.
The excimer laser corrects myopia and other visual defects.
PKR (Photorefractive Keratectomy)
PRK is a well-established laser surgery that reshapes the cornea to improve vision. It is often recommended for patients with thin corneas or those who are not eligible for LASIK.
Main features of PKR:
- No cutting of a corneal flap, making it an ideal option for people with thin corneas.
- The epithelium (surface layer of the cornea) is removed before laser correction.
- Longer recovery time compared to LASIK, with initial discomfort lasting a few days.
- Excellent long-term visual results.
transPKR (Transepithelial Photorefractive Keratectomy)
TransPKR is an advanced version of PKR, offering fully automated, contactless laser treatment. This technique is characterized by its increased precision and faster recovery times.
Benefits of transPKR:
- No mechanical instruments or alcohol application—everything is done by the laser.
- The epithelium is removed and the corneal remodeling is performed in a single step.
- Reduced risk of infection and faster healing compared to traditional PKR.
- Ideal for people with an active lifestyle or at risk of eye trauma.
KLEx (Lenticule Extraction Keratoplasty)
KLEx is an innovative procedure using a femtosecond laser to create and extract a corneal lenticule, thereby reshaping the cornea without the need for flap cutting or surface ablation.
Benefits of KLEx:
- Faster visual recovery and reduced postoperative discomfort.
- Suitable for patients with moderate myopia and astigmatism and some degrees of hyperopia.
- Less dry eye syndrome compared to LASIK.
Disadvantages of KLEx:
- The visual defect is not photoablated (absorbed by the laser), but a small lenticule is created inside the cornea.
- To extract it, this technique, although presented as less invasive, requires a block extraction of the lenticule as well as precise manual dissection using a spatula, on its anterior and posterior surfaces.
- Some very fine lenticules (corresponding to low corrections) are difficult to extract and may disintegrate.
- Some patients report persistent blurred vision for several weeks, as well as optical aberrations.
- This technique is still in the development phase, and we will only offer it to our patients when significant progress has been made by the manufacturers.
- To date, it only represents 5 to 8% of laser procedures, which reflects a reluctance shared by both the medical profession and patients.
