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Diffraction type multi-focal intraocular lens with targeted light field distribution

A technology of intraocular lens and light field distribution, applied in intraocular lens, prosthesis, medical science and other directions, can solve the problems of uncontrollable mechanical structure, unverified safety, questionable effectiveness, etc., to improve the utilization rate of light energy, Improve visual comfort and reduce glare

Active Publication Date: 2021-11-26
TIANJIN SHI JI KANG TAI BIOMEDICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complex mechanical structure is uncontrollable in the human eye, and its safety needs to be verified. At the same time, the function of the adjustable intraocular lens depends on the biological force of the ciliary muscle or the suspensory ligament tissue. For most presbyopia who have lost the ability to adjust, the effectiveness is doubtful.
Such products have not yet been certified in the domestic market

Method used

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  • Diffraction type multi-focal intraocular lens with targeted light field distribution
  • Diffraction type multi-focal intraocular lens with targeted light field distribution
  • Diffraction type multi-focal intraocular lens with targeted light field distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown, a diffractive multifocal intraocular lens with targeted optical field distribution, the intraocular lens includes an optical body (1), a first haptic (2) and a second haptic (3), the optical body (1) Has targeted light field distribution.

[0054] The optical main body (1), the first supporting haptic (2) and the second supporting haptic (3) are of an integrated structure, and are integrally formed by using the same material.

[0055] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract. The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, and a diffraction ring structure is superimposed on one of the optical surfaces;

[0056] The diameter of the effective optical zone of the optical body (1) is 6.0mm, and a lenticular lens sheet with a central thickness of 0.80mm; the thickness of the first supporting haptic (...

Embodiment 2

[0076] Such as figure 2 As shown, a diffractive multifocal intraocular lens with targeted optical field distribution, the intraocular lens includes an optical body (1), a first haptic (2) and a second haptic (3), the optical body (1) Has targeted light field distribution.

[0077] The optical main body (1), the first supporting haptic (2) and the second supporting haptic (3) are of an integrated structure, and are integrally formed by using the same material.

[0078] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract. The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, and a diffraction ring structure is superimposed on one of the optical surfaces;

[0079] The diameter of the effective optical zone of the optical body (1) is 6.0mm, and a lenticular lens sheet with a central thickness of 0.80mm; the thickness of the first supporting haptic ...

Embodiment 3

[0100] Such as image 3 As shown, a diffractive multifocal intraocular lens with targeted optical field distribution, the intraocular lens includes an optical body (1), a first haptic (2) and a second haptic (3), the optical body (1) Has targeted light field distribution.

[0101] The optical main body (1), the first supporting haptic (2) and the second supporting haptic (3) are of an integrated structure, and are integrally formed by using the same material.

[0102] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract. The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, and a diffraction ring structure is superimposed on one of the optical surfaces;

[0103] The diameter of the effective optical zone of the optical body (1) is 6.0mm, and a lenticular lens sheet with a central thickness of 0.80mm; the thickness of the first supporting haptic (...

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Abstract

The invention discloses a diffraction type multi-focal intraocular lens with targeted light field distribution. The intraocular lens comprises an optical body (1), a first supporting loop (2) and a second supporting loop (3), the optical body is provided with a phase-modulated diffraction structure optical area, targeted distribution of a light field is achieved, and an asymmetric and personalized trifocal visual range is generated; meanwhile, the far vision and the middle vision are continuous or the middle vision and the near vision are continuous, and even the whole-course vision is continuous; the far focus, the middle focus and the near focus all have achromatic ability, so that better predicted white-light vision can be obtained by implanting the intraocular lens into the eye; the structure can improve the light energy utilization rate; reduce glare and improve the visual comfort.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to an asymmetric continuous multi-focus intraocular lens prepared by changing the diffraction microstructure of the optical surface of the optical zone. Background technique [0002] The intraocular lens and the corresponding surgical techniques have developed rapidly in the past few decades. The lens replacement surgery has developed from the initial large-incision extracapsular cataract extraction to the current small-incision phacoemulsification combined with intraocular lens implantation. The operation time is short, the tissue damage is small, and the wound repair is fast. [0003] The treatment of cataract has also evolved from traditional sight restoration surgery to more challenging refractive surgery. Patients must not only see, but also see clearly and well. This has led to the continuous development of intraocular lenses: from monofocal intraocular lenses to m...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2/1618A61F2/1637A61F2240/001
Inventor 裴秀娟赵紫薇
Owner TIANJIN SHI JI KANG TAI BIOMEDICAL ENG CO LTD
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