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Aspheric artificial lens for resisting postoperative residual refractive error

A technology for intraocular lens and refractive error, applied in the fields of intraocular lens, prosthesis, medical science, etc., can solve the problem that the modulation of spherical aberration is difficult to play its role, so as to resist residual refractive error, reduce sensitivity, and improve surgical performance. The effect of fault tolerance

Pending Publication Date: 2021-11-05
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

In this case, spherical aberration modulation is difficult to play its role

Method used

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  • Aspheric artificial lens for resisting postoperative residual refractive error
  • Aspheric artificial lens for resisting postoperative residual refractive error
  • Aspheric artificial lens for resisting postoperative residual refractive error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] like figure 1 As shown, an aspheric intraocular lens for resisting postoperative residual ametropia, the intraocular lens includes an optical main body (1), a first supporting haptic (2) and a second supporting haptic (3), and the optical main body (1 ) adopts the aspheric design characterized by Q-type polynomials to broaden the range of the defocus curve under the premise of ensuring a certain total area, and to combat residual refractive errors after surgery.

[0076] 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.

[0077] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract.

[0078] The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, at least one of which is designed with an aspheric surface character...

Embodiment 2

[0109] like figure 2 As shown, an aspheric intraocular lens for resisting postoperative residual ametropia, the intraocular lens includes an optical main body (1), a first supporting haptic (2) and a second supporting haptic (3), and the optical main body (1 ) against postoperative residual refractive error.

[0110] 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.

[0111] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract.

[0112] The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, at least one of which is designed with an aspheric surface characterized by a Q-type polynomial, specifically it can be "strong aspheric Q con ” or “Moderate Aspherical Q bfs ".

[0113] The diameter of the effective optical zon...

Embodiment 3

[0143] like image 3 As shown, an aspheric intraocular lens for resisting postoperative residual ametropia, the intraocular lens includes an optical main body (1), a first supporting haptic (2) and a second supporting haptic (3), and the optical main body (1 ) against postoperative residual refractive error.

[0144] 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.

[0145] The periphery of the optical main body (1) has 360° right-angled square sides, which can effectively suppress the occurrence of post-cataract.

[0146] The optical body (1) is composed of two optical surfaces, which can be spherical or aspherical, at least one of which is designed with an aspheric surface characterized by a Q-type polynomial, specifically it can be "strong aspheric Q con ” or “Moderate Aspherical Q bfs ".

[0147] The diameter of the effective optical zone...

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Abstract

The invention discloses an aspheric artificial lens for resisting postoperative residual refractive error, the artificial lens comprises an optical main body (1), a first support loop (2) and a second support loop (3), the optical main body (1) adopts aspheric design represented by a Q-type polynomial, an optical area has a focal depth extension function, optical imaging excess resolution is reasonably utilized, and the operation fault-tolerant rate is improved; light artificial lens deviation is better adapted, the sensitivity of focal power and image quality to an implantation position is reduced, postoperative residual refractive error is resisted, and the visual satisfaction is improved; meanwhile, high-order aberration is considered, and high resolution is kept.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to an aspheric intraocular lens designed through a Q-type polynomial equation to resist postoperative residual ametropia. 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. 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. [0003] As we all know, the human cornea is positive spherical aberration. Under a large pupil, the peripheral rays are refracted much more th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2/164A61F2240/001
Inventor 王明坤赵紫薇张明瑞裴秀娟
Owner TIANJIN SHI JI KANG TAI BIOMEDICAL ENG CO LTD
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