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WHAT IS AN ASTIGMATISM?

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.

CORRECTION OF ASTIGMATISM - WHICH METHOD IS BEST FOR ME?

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.

EYE LASER METHOD FOR THE TREATMENT OF ASTIGMATISM

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.

ReLEx smile*

Astigmatism up to 5 D

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eeLASIK / Femto-LASIK*

Astigmatism up to 4 D

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PRK / LASEK**

Astigmatism up to 3 D

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* Depending on the thickness of the cornea ** With a very thin cornea

Lens Procedure in Case of Higher Astigmatism

Implantable Toric Contact Lens (ICL) *

Astigmatism up to 6 D

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* Patients younger than 40-45 years

Lens Procedure treating Astigmatism in Combination with Presbyopia

Toric Multifocal Lens *

Astigmatism up to 12 D

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* Patients older than 40-45 yearse

ASTIGMATISM – THE PROBLEM IN DETAIL

Normal Vision

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.

Astigmatism

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.