in the present invention the contact lens for the correction of u043cu0438u043eu043fu0438u0438 and / or astigmatism.by implementing the correction u043cu0438u043eu043fu0438u0438 and / or astigmatism by changing the form of the cornea of a patient.contact lens for correction of astigmatism u043cu0438u043eu043fu0438u0438 and / or contains a zone u043du0430u0434u0430u0432u043bu0438u0432u0430u043du0438u044f, having a first surface, which is set by the internal the surface of the contact lens.the cornea of the patient, and is located in the center of the contact lens.a first surface attached to the u0432u043eu0433u043du0443u0442u0443u044e form and its curvature is less than the curvature of the surface of the central cornea of a patient.contact lens further contains a zone of unloading, with the second surface of the u0432u043eu0433u043du0443u0442u043eu0439 form, which is set by the internal surface of the uca lead contact lensbased on the part of the patient's cornea, and is located on the outer edge of the zone u043du0430u0434u0430u0432u043bu0438u0432u0430u043du0438u044f and support zone, a third surface u0432u043eu0433u043du0443u0442u043eu0439 formwhich one of the inner surface of the contact lens through which the patient's cornea, and is located on the outer edge zone of u0440u0430u0437u0433 u0440u0443u0437u043au0438.to develop a specific required changes of corneal curvature of the patient's first surface set on the basis of the form of the cornea of a patient.in addition, each of the first, second and third surfaces are such that their curvature values satisfy the following formulas: rc = bc + 7.0 ~ 9.0 u0434u043fu0442u0440 (u0434u0438u043eu043fu0442u0440u0438u0439) u0438AC = bc + 2.0 ~ 4.0 u0434u043fu0442u0440 bc - curvature, where a first surface, a second surface curvature rc, a third ac - curvature surface.
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