INTRAOCULAR LENS Russian patent published in 2010 - IPC A61F2/16 

FIELD: medicine.

SUBSTANCE: invention relates to ophthalmosurgery. An intraocular lens (IOL) comprises optical and reference elements. A front surface of the optical element is flat, while a back surface thereof represents curvilinear surfaces concave relative to the front surface with a continuous curvature with the same central optical axis. A central surface of the back surface is a segment of a concave elliptic surface. The relation of a greater axis of the elliptic surface to the diametre of the optical element lays within the range 0.2 to 0.4. The second piece of the back surface is a segment of a concave hyperbolic surface. The relation of the diametre of the segment of the hyperbolic surface to the diametre of the optical element lays within the range 0.3 to 0.4. The peripheral piece of the back surface is a segment of a parabolic surface, and the relation of the diametre of this surface to the diametre of the optical element lays within the range 0.3 to 0.4.

EFFECT: application of said IOL enables to improve acuity of daylight and night vision to an intact-eye level.

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