Our eye treatment center has a state-of-the-art laser device for the treatment of various eye diseases in the anterior and posterior part of the eye. All laser treatments are performed in anesthesia outpatient, take only a few minutes and are not very stressful for the patient. Unfortunately, it is not possible to participate in traffic on the day of the laser treatment due to the pupil dilation. Below is an exemplary list of diseases using the laser.
As a posterior is called a clouding of the lens capsule, which forms some time after the operation of the cataract. With the laser, a gap is created in the center of the lens capsule, so that light hits the retina unhindered again and good vision is made possible again.
A swelling of the retina and a lack of blood supply to the retina with neovascularization often require laser treatment of the retina. This is often done in several sessions. The number of necessary treatments depends on the extent of the disease.
Common diseases of the vessels are e.g. Vein occlusions on the fundus, which can affect vision in a central location. The laser is also used to occlude arterial vessels.
A hole in the retina may result in retinal detachment and subsequent vision loss. If a retinal defect is detected, in most cases it is possible to block this defect with the laser and thus prevent the development of a retinal detachment.
If a narrow chamber angle is detected and there is a risk of a sudden increase in intraocular pressure (glaucoma), a small hole (iridotomy) in the iris can be made with the laser.
The most widespread in Germany is the so-called Lasik method. The abbreviation Lasik stands for laser in situ keratomileusis. A femtosecond laser cuts a semicircle into the cornea. The surgeon then unfolds the corneal lid: A second laser removes the underlying cornea slightly. A few thousandths of worn-out millimeters are sufficient to change the refractive power and correct the ametropia. Finally, the lid is folded back onto the eye.
Since 2011, a further developed, gentler procedure has been used: In the surgical technique called ReLEx Smile (refractive lenticule extraction), the laser beams under the cover skin detach tissue from the uppermost corneal layer, which is then removed by a tiny incision.
Which method is better, only the attending physician can determine. Information about this is given by various preliminary examinations. Knorz emphasizes the importance of these examinations: "Not every defect can be remedied by laser surgery." Problems after an operation could arise especially when patients come under the laser whose eyes are not actually suitable for the procedure. Thorough preliminary examinations, which measure not only corneal thickness but also the nature of the cornea and pupil diameter, help physicians determine if the eye is eligible for surgery. The number of diopters also plays a role: "With the current procedures, the refractive error can be corrected in a nearsightedness to about minus eight, in a farsightedness to about plus three".
As promising and widespread as the laser eye surgery is, not all eye diseases can be cured by laser. A correction of the vision is possible with a refractive error, in which the removal of the cornea (cornea), the refractive power of the eye changed so much that an existing farsightedness or myopia can be resolved again. The prerequisite for the lasering of the eye is therefore a certain thickness of the cornea. The lower the visual impairment - measured in diopter numbers - the more successful the result of the laser surgery. An optimal correction, the doctor can usually reach (there are exceptions!)
Within the following limits:
Ultimately, however, eye laser success depends on the individual training of the patient's cornea. Whether the eyes are suitable for lasering, one can only learn after a preliminary examination at a corresponding eye laser specialists. Often parents are considering laser intervention in children and adolescents. Most laser centers refuse such eye surgery in a child before the age of 18. The surgery is recommended only at an age when the eyes have reached stable levels.
The ideal age at which one can have the eyes lasered is therefore roughly between 25 and 45 years. This age limit is only a guideline. From a correction for aesthetic reasons is at a very young age but is strongly discouraged. Here, the use of a visual aid such as glasses or contact lens is recommended as the much better alternative to eye lasers. Even if a minimum age of 18 years is reached, the ophthalmic values should be stable for at least 2 years for eye laser surgery to make sense.
Before you laser your eyes, you should first learn how the treatment works or what exactly happens in the laser procedure. In the following, the steps of a laser operation will be explained step by step by means of illustrative graphics and images. The crucial procedure takes place directly on the cornea. There are, however, different methods of laser vision. The most commonly used procedure is Laser Assisted In Situ Keratomileusis, short LASIK. The following information explains how the LASIK operation works. There are also other procedures and names, such as LASEK, Femto LASIK and Epi LASIK, photorefractive keratectomy (PRK) and transepithelial PRK, FLEx and SmILE, ReLEx smile etc.
The differences between all these refractive surgery procedures are often minimal, e.g. whether operated with or without flaps (see below). The result can make a big difference. A competent comparison and advice can be found in your eye laser center. This clarifies which surgical method is useful for the lasering of your eyes and how the risks and costs of the surgery are.
In order to even understand how eye lasers work, the procedure is now explained using a LASIK OP.
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