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A corneal curvature is also called astigmatism, which means that the cornea is not normal but deformed. Astigmatism is a common vision disorder, which is the cause of fuzzy visibility at any distance. Astigmatism often occurs in combination with short-sightedness or farsightedness.
Astigmatism is considered normal in the human eye of up to 0.5 diopters. The deformed cornea is mostly congenital, but in rare cases can develop only with time.
Both a pure astigmatism and an astigmatism in combination with another vision disorders can be corrected by EuroEyes. In order to determine whether the patient is suitable for laser surgery, a thorough consultation and a detailed preliminary examination are always carried out before the procedure. Safety and diagnostics are absolutely in the foreground during the preliminary examination. If a patient is not suitable for an eye laser correction, EuroEyes can offer other treatment methods.
EuroEyes offers Eye laser and lens surgery at procedures to correct astigmatism – also in combination with farsightedness or nearsightedness. The defective vision can be treated with the aid of state-of-the-art laser procedures such as ReLEx smile or by implanting ICL contact lenses or multifocal/trifocal lenses.
Astigmatism up to 5 D
Astigmatism up to 4 D
Astigmatism up to 3 D
Astigmatism up to 6 D
Astigmatism up to 12 D
Eye surgeon and specialist in ophthalmology.
Medical director of the EuroEyes alz augenklinik Munich
Medical director of the EuroEyes Laser Eye Center Berlin
Good vision requires a sharp image being produced on the retina at the back of the eye. The optical system (cornea, crystalline lens and vitreous body) of a normal eye diverts light rays in a way that they land exactly in focus at the point of best vision on the retina, the so-called makula. This diversion of light rays is called refraction. The total refractive power is expressed in diopters (D). The total refractive power is determined on the basis of the different parts of the optical system. When the total refraction is zero diopters, objects will be depicted sharply on the retina.
Ideally the curvature of the cornea is shaped regularly like the surface of a ball. Astigmatism occurs when the corneal surface is more an irregular shape, more like that of an egg. Instead of gathering in a single point, light focuses at several different points both in front of and behind your retina, causing blurred vision. The light is refracted differently through the different curvatures of the cornea, e.g. vertical light rays are refracted differently than horizontal ones. This results in a distorted image, and a dot may appear as a line. The optical correction is made by changing the refractive power so that the two focal points are shifted exactly onto the retina – basically the same effect as can be achieved with a toric cylindrical lens.
Different types of astigmatism are divided into two groups: Astigmatismus regularis (regular astigmatism) and astigmatismus irregularis (irregular astigmatism). In the case of regular astigmatism, incident light rays are imaged on vertical focal lines. In the case of irregular astigmatism, however, the optical planes are not perpendicular to each other.
Slight forms of astigmatism have hardly any noticeable effects – astigmatism only becomes noticeable when it is more pronounced. Then it often shows the following symptoms:
As a rule an astigmatism is diagnosed by ophthalmologist or optician. Once it is clear that there is an astigmatism, the cornea can be measured more accurately to determine the type and severity of astigmatism. An exact diagnosis can be made with the following instruments:
Depending on the strength of the astigmatism, different treatment methods are available. Astigmatism can be corrected with glasses, contact lenses or surgery. Which method is suitable to correct the visual defect depends on its shape. Irregular astigmatism, for example, cannot be corrected by glasses due to irregular corneal curvature or an irregularly curved lens.
Laser surgery removes the unevenness in the cornea and thus creates an even surface. Another surgical treatment approach is to correct the astigmatism with a new lens. The body’s own lens is removed and replaced by an artificial lens (intraocular lens) – the cornea is left as it is. The intraocular lens compensates for the curvature of the cornea.
EuroEyes offers various laser procedures and lens treatments for correction of astigmatism and also in combination with farsightedness or nearsightedness. EuroEyes can correct ametropia with the aid of state-of-the-art laser procedures such as ReLEx smile or the implantation of ICL contact lenses.
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Your recommended treatment:
ReLEx smile technology is a gentle form of laser vision correction that allows you to correct myopia. Therefore, corneal curvature is easily treatable with this method. During the procedure ReLEx smile the cornea opens with a small incision of 2 mm. A 3D disk (lenticular) that was previously prepared using a femtosecond laser is extracted through this “keyhole”. This lenticule corresponds exactly to the weight and size of the corrected ametropia. The whole procedure takes about 32 seconds per eye. (For people aged 45-64: Femto-LASIK is medically possible, but we recommend using trifocal / multifocal lenses to prevent cataracts.) The result of this test is not a mandatory recommendation. During a personal detailed consultation and after a thorough preliminary examination, your doctor will determine the procedure that is most suitable for you. Are you interested in receiving advice on the recommended treatment method from our experts at EuroEyes?
For more than 20 years, implantable contact lenses made from Collamer® (abbreviated as ICL) have been the best solution for patients with severe ametropia or a damaged cornea. Unlike contact lenses, ICL remains permanently in the eye. These lenses are inserted between the iris and the own lens of the eye. The ICL in combination with the natural lens ensures that the light is correctly focused on the retina and that the patient can see again clearly without glasses. You are in good hands with us: EuroEyes has implanted the largest number of ICL contact lenses throughout Europe. The result of this test is not a mandatory recommendation. During a personal detailed consultation and after a thorough preliminary examination, your doctor will determine the procedure that is most suitable for you. Are you interested in receiving advice on the recommended treatment method from our experts at EuroEyes?
Femto-LASIK is one of the most reliable methods for correcting visual defects (enter the appropriate type of ametropia depending on the test result). To correct the refraction error using the Femto-LASIK procedure, a small round cap is separated on the cornea. During the Femto-LASIK procedure, the preparation of a corneal flap, also known as a flap, is performed using a femtosecond laser. The whole procedure is carried out without the use of mechanical cutting tools. The laser performs individual correction of ametropia and simulates the shape of the cornea. Then the flap is fixed in its original place. It adheres to the surface of the eye due to the strength of adhesion and protects the eye as an internal adhesive. (For people aged 45-64: Femto-LASIK is medically possible, but we recommend using trifocal / multifocal lenses to prevent cataracts.) The result of this test is not a mandatory recommendation. During a personal detailed consultation and after a thorough preliminary examination, your doctor will determine the procedure that is most suitable for you. Are you interested in receiving advice on the recommended treatment method from our experts at EuroEyes?
Using trifocal / multifocal intraocular lenses, also known as artificial lenses, is a safe and accurate method for correcting presbyopia (enter the appropriate type of ametropia depending on the test result). The natural, more non-functioning lens of the eye, is replaced by an artificial lens (multifocal lens). The advanced artificial lens has several focal points, which allows you to see at different distances without glasses. These very well tolerated lenses can remain in the eye throughout the life of a person and not be visible. The refractive lens replacement procedure (lensectomy) is a tested and proven method. This method has been used for the treatment of cataracts for decades and is the most frequently performed type of surgery in the world. EuroEyes clinics performed the largest number of implantations of multifocal lenses worldwide. The result of this test is not a mandatory recommendation. During a personal detailed consultation and after a thorough preliminary examination, your doctor will determine the procedure that is most suitable for you. Are you interested in receiving advice on the recommended treatment method from our experts at EuroEyes?
