INTRAOCULAR LENSE OF GRADUALLY VARIED LENS POWER Russian patent published in 2011 - IPC A61F2/16 

FIELD: medicine.

SUBSTANCE: invention refers to ophthalmosurgery. An intraocular lens of gradually varied lens power comprises an optical portion of varied geometry and a bearing portion. The optical portion is composed of at least layer-by-layer separate curved optical elements with their optical axes being matched and passing through the centre of the optical part with various radiuses of curvature, various thicknesses, circumferentially coupled together. Two uniform diametral bow-shaped crescent notches spaced 0.1-0.15 mm from an attachment point are provided at the periphery of each optical element. One of the arches forming a notch is matched with a circle concentric to the optical part, along the arches of the same circle, between the notches, from both sides from the notches, through perforations are formed with the optical elements consecutively layer-by-layer moving off thereon starting with a front surface, the notches in each following of the layer-by-layer optical elements are made with angular displacement relatively to the previous one.

EFFECT: extended range of lens power variation and higher accuracy of its graduation.

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