Chirurgie Refractive Lasik correction de l'acuité visuelle
Le LASIK est une procédure de correction de la vision au laser qui offre une solution efficace et sûre pour ceux qui souhaitent se débarrasser de leurs lunettes ou lentilles de contact. C'est une intervention courante et bien établie qui a permis à des millions de personnes dans le monde de retrouver une vision claire et nette. Dans cet article, nous vous présenterons le déroulement de l'intervention LASIK, l'anesthésie utilisée, les résultats attendus et les soins à long terme pour maintenir une vision optimale.
I Lasik details
I Lasik
Prices
About
What is Excimer Laser? An excimer laser is a precise computerized instrument using invisible cool ultra-violet light to change the corneal shape. This cool light laser technique is a safe process and does not affect the surrounding tissue. Each pulse of the laser removes only a minute amount of corneal tissue about 1/500th of the thickness of a human hair. Newer generation excimer lasers, utilize an innovative technology called a “flying spot laser.” A narrow beam (about 2 mm wide) contacts the eye at lightning speed in a pattern that allows the debris to clear in one place before contacting that area again.
This technology produces a smoother corneal shape and helps increase the accuracy and efficiency of the surgery. The newest generation excimer laser, System for Personalized Laser Vision Correction, combines both a 2mm and a 1mm beam.
PRK
PRK is a surgical procedure that uses an extremely precise laser to remove corneal tissue for the purpose of correcting refractive error. During PRK the epithelium (skin) is gently removed from the cornea. The laser removes tissue directly from the surface of the cornea to give it a new shape. This was the earlier form of laser treatment and although it gave good results, was more painful and usually a slower recovery than Lasik. A bandage contact lens helps to reduce the irritation and encourage healing of the tissue. PRK may be recommended if corneal measures are too thin for Lasik.
Lasik
With this treatment the most superficial surface of the cornea is softened with an alcohol-solution and rolled up. After the laser treatment has been completed, the surface of the cornea is returned to its original position.
Wavefront Technology
Throughout the world this is an acknowledged method. This technology offers to patients with amblyopia and irregularities on the cornea, qualitative first-class result.
The aim of the wavefront technology is to treat patients with myopia, hypermetropia and corneal irregularities, perfectly.
The vision problems at night and the light hypersensivity are either decreased or totally eliminated.
The most advanced LASIK surgery in the world
Revolution in LASIK surgery. It represents the pinnacle of blade-free, fully customized laser vision correction, and is the premium LASIK solution available in the world today.
Key Features:
• iLASIK combines the two most advanced LASIK technologies in the world.
• iLASIK is the first vision correction procedure to be 100% customized to the unique characteristics of each eye.
• iLASIK is the only laser eye surgery approved by NASA and trusted by all branches of the US military.
• iLASIK has been over a decade in the making, and is trusted by thousands of doctors and millions of patients worldwide.
• 100% blade-free, combines all the latest all-laser technology.
• 100% customized, tailored to the unique characteristics of your eyes.
• Incredibly safe, one of the safest medical procedures in the world.
• Highly effective, the majority of patients experience 20/20 vision or better.
• Fast & virtually painless, it only takes less than 15 minutes to correct eyes.
• Suitable for almost everyone, more people treated than ever before
How does iLASIK work?
Prior to LASIK vision correction surgery, your surgeon will perform a comprehensive eye exam to ensure that you are a good candidate for treatment. During this exam, a map of your eye will be created. This map will be used during the LASIK procedure so a precise amount of corneal tissue is removed, providing you with the clearest visual results possible. The pre-LASIK vision correction evaluation should include:
iLASIK combines the most advanced measurement technology in the world, and two of the world’s most advanced computer-guided LASIK lasers, into one safe and highly effective procedure.
Your personalized iLASIK procedure:
Step 1: Unique vision profile First, we use the most advanced measurement technology in the world to painlessly measure your eyes. WaveScan technology creates a 3D map of each eye, detecting even the most minute imperfections, so that your iLASIK surgeon can custom-fit your treatment to your individual eyes.
Step 2: Personalized iLASIK flap Next, the first of two lasers – called an IntraLase – is used to create a flap in your cornea (the surface of your eye), which is folded back to perform iLASIK. This blade-free method delivers outstanding results, with more patients achieving 20/20 vision or better and better night vision as well.
Step 3: Custom laser vision correction Finally, the Advanced CustomVue laser corrects your vision to the exact specifications of your unique vision profile. This laser offers the highest level of precision, and literally locks onto your eye, reacting automatically to the finest movements during surgery to provide a safe and accurate result.
You should tell your doctor:
About your past and present medical and eye conditions
About all the medications you are taking, including over-the-counter medications and any medications you may be allergic to
Your doctor should perform a thorough eye exam and discuss:
Whether you are a good candidate
What the risks, benefits, and alternatives of the surgery are
What you should expect before, during, and after surgery
What your responsibilities will be before, during, and after surgery
You should have the opportunity to ask your doctor questions during this discussion. Give yourself plenty of time to think about the risk/benefit discussion, to review any informational literature provided by your doctor, and to have any additional questions answered by your doctor before deciding to go through with surgery and before signing the informed consent form.
You should not feel pressured by your doctor, family, friends, or anyone else to make a decision about having surgery. Carefully consider the pros and cons.
The day before surgery, you should stop using:
Creams
Lotions
Makeup
Perfumes
These products as well as debris along the eyelashes may increase the risk of infection during and after surgery. Your doctor may ask you to scrub your eyelashes for a period of time before surgery to get rid of residues and debris along the lashes.
Also before surgery, arrange for transportation to and from your surgery and your first follow-up visit. On the day of surgery, your doctor may give you some medicine to make you relax. Because this medicine impairs your ability to drive and because your vision may be blurry, even if you don't drive make sure someone can bring you home after surgery.
During Surgery The surgery should take less than 30 minutes. You will lie on your back in a reclining chair in an exam room containing the laser system. The laser system includes a large machine with a microscope attached to it and a computer screen.
A numbing drop will be placed in your eye, the area around your eye will be cleaned, and an instrument called a lid speculum will be used to hold your eyelids open.
Your doctor may use a laser keratome (a laser device), instead of a mechanical microkeratome, to cut a flap on the cornea.
If a laser keratome is used, the cornea is flattened with a clear plastic plate. Your vision will dim and you may feel the pressure and experience some discomfort during this part of the procedure. Laser energy is focused inside the cornea tissue, creating thousands of small bubbles of gas and water that expand and connect to separate the tissue underneath the cornea surface, creating a flap. The plate is then removed.
You will be able to see, but you will experience fluctuating degrees of blurred vision during the rest of the procedure. The doctor will then lift the flap and fold it back on its hinge, and dry the exposed tissue.
The laser will be positioned over your eye and you will be asked to stare at a light. This is not the laser used to remove tissue from the cornea. This light is to help you keep your eye fixed on one spot once the laser comes on.
When your eye is in the correct position, your doctor will start the laser. At this point in the surgery, you may become aware of new sounds and smells. The pulse of the laser makes a ticking sound. As the laser removes corneal tissue, some people have reported a smell similar to burning hair. A computer controls the amount of laser energy delivered to your eye. Before the start of surgery, your doctor will have programmed the computer to vaporize a particular amount of tissue based on the measurements taken at your initial evaluation. After the pulses of laser energy vaporize the corneal tissue, the flap is put back into position.
A shield should be placed over your eye at the end of the procedure as protection, since no stitches are used to hold the flap in place. It is important for you to wear this shield to prevent you from rubbing your eye and putting pressure on your eye while you sleep, and to protect your eye from accidentally being hit or poked until the flap has healed.
Suis-je un bon candidat pour le Lasik ?
La meilleure façon de déterminer si vous êtes un bon candidat pour le Lasik est de consulter un ophtalmologiste spécialisé dans la chirurgie réfractive. Ils évalueront votre prescription visuelle, votre santé oculaire globale et vos attentes pour déterminer si le Lasik est approprié pour vous.
Anesthésie
Pour votre confort, le LASIK est généralement réalisé sous anesthésie locale. Votre ophtalmologiste appliquera des gouttes anesthésiques sur vos yeux pour engourdir la zone, vous permettant ainsi de ressentir peu ou pas d'inconfort pendant l'intervention. L'anesthésie locale élimine également le besoin d'une anesthésie générale, ce qui rend la procédure plus rapide et sûre.
Combien de temps dure l'intervention de Lasik ?
L'intervention de Lasik elle-même dure généralement entre 15 et 30 minutes pour les deux yeux. Cependant, il est important de prévoir du temps supplémentaire pour les préparatifs avant l'intervention et pour les explications postopératoires.
Résultats
Après une intervention LASIK réussie, vous pouvez vous attendre à une amélioration significative de votre vision. La plupart des patients constatent une nette diminution de leur dépendance aux lunettes ou lentilles de contact, voire une vision claire sans aucune aide visuelle. Les résultats du LASIK sont généralement durables, vous permettant de profiter d'une vision nette et dégagée pendant de nombreuses années.
Entretien sur le long terme
Pour maintenir les résultats du LASIK sur le long terme, il est important de suivre les recommandations de votre ophtalmologiste. Cela peut inclure l'utilisation de collyres ou de gouttes hydratantes pour les yeux, en particulier si vous ressentez une sécheresse oculaire. Évitez de vous frotter les yeux vigoureusement et protégez vos yeux des rayons UV en portant des lunettes de soleil. Des examens réguliers avec votre ophtalmologiste vous permettront de surveiller votre vision et de détecter tout changement potentiel.
After Surgery
Immediately after the procedure, your eye may burn, itch, or feel like there is something in it. You may experience some discomfort, or in some cases, mild pain and your doctor may suggest you take a mild pain reliever. Both your eyes may tear or water. Your vision will probably be hazy or blurry. You will instinctively want to rub your eye, but don't! Rubbing your eye could dislodge the flap, requiring further treatment. In addition, you may experience sensitivity to light, glare, starbursts or haloes around lights, or the whites of your eye may look red or bloodshot. These symptoms should improve considerably within the first few days after surgery. You should plan on taking a few days off from work until these symptoms subside. You should contact your doctor immediately and not wait for your scheduled visit, if you experience severe pain, or if your vision or other symptoms get worse instead of better.
Do not take shower and wash your eyes till after the check-up!
Do not touch and rub your eyes!
Your eyes can water. If needed, you can slowly clean your cheek!
The day after treatment you must come to check. Do not wash your face!
You can wipe your face without touching your eyes!
After the treatment your eyes can burn and itch. In this case close your eyes. (at night do not read and do not watch TV)!
For one week do not swim and do not go to sauna, because of using medicines!
Do not make-up for one week!
The day after the treatment you should come to check-up!
You should see your doctor within the first 24 to 48 hours after surgery and at regular intervals after that for at least the first six months. At the first postoperative visit, test your vision, and examine your eye. Your doctor may give you one or more types of eye drops to take at home to help prevent infection and/or inflammation. You may also be advised to use artificial tears to help lubricate the eye. Do not resume wearing a contact lens in the operated eye, even if your vision is blurry.
You should wait one to three days following surgery before beginning any non-contact sports, depending on the amount of activity required, how you feel, and your doctor's instructions.
To help prevent infection, you may need to wait for up to two weeks after surgery or until your doctor advises you otherwise before using lotions, creams, or make-up around the eye. Your doctor may advise you to continue scrubbing your eyelashes for a period of time after surgery. You should also avoid swimming and using hot tubs or whirlpools for 1-2 months.
Strenuous contact sports such as boxing, football, karate, etc. should not be attempted for at least four weeks after surgery. It is important to protect your eyes from anything that might get in them and from being hit or bumped.
During the first few months after surgery, your vision may fluctuate.
It may take up to three to six months for your vision to stabilize after surgery.
Glare, haloes, difficulty driving at night, and other visual symptoms may also persist during this stabilization period. If further correction or enhancement is necessary, you should wait until your eye measurements are consistent for two consecutive visits at least 3 months apart before re-operation.
It is important to realize that although distance vision may improve after re-operation, it is unlikely that other visual symptoms such as glare or haloes will improve.
It is also important to note that no laser company has presented enough evidence for the FDA to make conclusions about the safety or effectiveness of enhancement surgery.
If you develop any new, unusual or worsening symptoms at any point after surgery, contact your eye doctor immediately.
ENJOY YOUR NEW VISION!
FAQ
Lasik is a refractive surgical procedure used to correct vision problems such as nearsightedness, farsightedness and astigmatism. It involves reshaping the cornea using an excimer laser to improve clarity of vision.The Lasik procedure takes place in several stages. First, the surgeon creates a thin flap in the cornea using a laser or microkeratome. Next, the corneal tissue under the flap is reshaped using the excimer laser. Once the reshaping is complete, the flap is replaced, acting as a natural dressing for the corneaMost patients experience very little pain during the Lasik procedure. Before the procedure, anesthetic drops are given to numb the eyes, reducing discomfort. After the procedure, some patients may experience a slight burning sensation or discomfort, but this usually dissipates quickly.After a Lasik procedure, most patients notice a significant improvement in their vision. They can do without glasses or contact lenses in most everyday situations. However, results may vary depending on the initial prescription and individual response to treatment.Recovery after a Lasik procedure is generally quick. Most patients notice an improvement in their vision the day after the procedure. However, it is important to follow the surgeon's postoperative instructions, including avoiding strenuous physical activity and taking prescribed medications, to ensure optimal healing.Like any surgical procedure, Lasik has some potential risks and side effects. This may include temporary dry eyes, sensitivity to light, halos or glare, fluctuating vision, and reduced night vision. However, most of these side effects gradually disappear over time.Yes, Lasik is generally considered a permanent procedure. However, it is important to note that vision can change naturally over time due to aging or other factors. In such cases, additional adjustments may be necessary to maintain clear vision.An excimer laser is a precise, computerized instrument that uses cool, invisible ultraviolet light to change the shape of the cornea. This cold light laser technique is a safe process and does not affect surrounding tissues. Each pulse of the laser removes only a tiny amount of corneal tissue, approximately 1/500th the thickness of a human hair. New generation excimer lasers use an innovative technology called "flying point laser". A narrow beam (about 2mm wide) contacts the eye at lightning speed in a pattern that allows debris to clear in one location before coming into contact with that area again.
