FIELD: optics; ophthalmology.
SUBSTANCE: element in the form of an eyeglass lens intended for wearing in front of the human eye contains a refractive area with a refractive capacity based on the prescription for the specified eye; and a set of at least three optical elements, which are not continuous. At least one optical element has a non-spherical optical function. The refractive area is formed as an area that differs from parts formed as the set of optical elements. At least one of optical elements is a multifocal refracting micro-lens containing an aspherical progressive surface. Aspherical micro-lenses have an asphericity from 0.1D to 3D, or their ahpericity after coating the surface of the lens-shaped element changes in accordance with a radial distance from the optical center of the specified lens-shaped element.
EFFECT: improvement of slowing down or reduction in progression of abnormal eye refraction in myopia or hypermetropia.
13 cl, 11 dwg, 3 tbl
Title | Year | Author | Number |
---|---|---|---|
LENS-SHAPED ELEMENT | 2019 |
|
RU2768515C1 |
LENS-SHAPED ELEMENT | 2019 |
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LENS-SHAPED ELEMENT | 2019 |
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LENS-SHAPED ELEMENT | 2019 |
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LENS | 2019 |
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RU2788434C2 |
OPTICAL LENS | 2019 |
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RU2799407C2 |
OPHTHALMIC LENSES CONTAINING ELEMENTARY LENSES FOR PREVENTION AND/OR SLOWING DOWN OF MYOPIA PROGRESSION | 2019 |
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RU2792078C2 |
LENS ELEMENT | 2019 |
|
RU2795740C2 |
OPHTHALMIC LENS WITH OPTICALLY NON-COAXIAL ZONE FOR MYOPIA CONTROL | 2019 |
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RU2781125C2 |
APPARATUS FOR INCREASING DEPTH OF FOCUS | 2005 |
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RU2436135C2 |
Authors
Dates
2022-03-28—Published
2019-03-01—Filed