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Axial spherical aberration progressive modulation type aspheric intraocular lens

A technology of intraocular lens and aspheric surface, applied in intraocular lens, prosthesis, medical science, etc., can solve the problem that positive spherical aberration cannot meet the requirements, and achieve widening indications of intraocular lens, low sensitivity, and reduced postoperative reset Effect

Active Publication Date: 2019-02-22
WUXI VISION PRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these intraocular lenses with negative spherical aberration distribution can only guarantee to achieve the expected purpose of retaining a certain amount of positive spherical aberration at the pupil position of 6 mm, and the retained positive spherical aberration cannot meet the requirements at the small and medium pupil positions.

Method used

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  • Axial spherical aberration progressive modulation type aspheric intraocular lens
  • Axial spherical aberration progressive modulation type aspheric intraocular lens
  • Axial spherical aberration progressive modulation type aspheric intraocular lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like figure 1 As shown, an axial spherical aberration progressive modulation type aspheric intraocular lens, 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 has Non-constant characterizing equation for an aspheric surface, at pupil diameter 2y n The local representation equation of the aspheric surface is:

[0060]

[0061]

[0062] In pupil diameter 2y a =3mm, 2y b =3.5mm, 2y c =4mm, 2y n = 6mm, aspherical Q a , Q b , Q c , Q n Respectively -3.3, -6.2, -9.5, -13.5,

[0063] The optical main body 1, the first support haptic 2 and the second support haptic 3 are integrally formed by using the same material;

[0064] The surfaces of the first support haptic 2 and the second support haptic 3 are provided with oblique sawtooth grooves; the height of the oblique sawtooth is greater than 40 μm.

[0065] The diameter of the effective optical zone of the optic...

Embodiment 2

[0083] like figure 2 As shown, an axial spherical aberration progressive modulation type aspheric intraocular lens, 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 has Non-constant characterizing equation for an aspheric surface, at pupil diameter 2y n The local representation equation of the non-curved surface is:

[0084]

[0085]

[0086] In pupil diameter 2y a =3mm, 2y b =3.5mm, 2y c =4mm, 2y n = 6mm, aspherical Q a , Q b , Q c , Q n Respectively -10.6, -20.2, -28.4, -39.7

[0087] The optical main body 1, the first support haptic 2 and the second support haptic 3 are integrally formed by using the same material;

[0088] The surfaces of the first support haptic 2 and the second support haptic 3 are provided with oblique sawtooth grooves; the height of the oblique sawtooth is greater than 40 μm.

[0089] The diameter of the effective optical zone of the o...

Embodiment 3

[0103] like image 3 As shown, an axial spherical aberration progressive modulation type aspheric intraocular lens, 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 has Non-constant characterizing equation for an aspheric surface, at pupil diameter 2y n The local representation equation of the non-curved surface is:

[0104]

[0105]

[0106] In pupil diameter 2y a =3.5mm, 2y b =4mm, 2y c =4.5mm, 2y n =Aspherical Q at 6mm a , Q b , Q c , Q n They are -12.3, -21.3, -33.4, -52.5 respectively.

[0107] The optical main body 1, the first support haptic 2 and the second support haptic 3 are integrally formed by using the same material;

[0108] The surfaces of the first support haptic 2 and the second support haptic 3 are provided with oblique sawtooth grooves; the height of the oblique sawtooth is greater than 40 μm.

[0109] The diameter of the effective optical z...

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Abstract

The invention discloses an axial spherical aberration progressive modulation type aspheric intraocular lens. The intraocular lens comprises an optical main body (1), a first supporting loop (2) and asecond supporting loop (3), wherein the optical main body (1) is provided with an aspherical surface of a non-constant characterization equation. The optical main body of the lens is provided with anaxial spherical aberration progressive modulation optical area, a certain positive spherical aberration (focal depth) under different pupil sizes can be maintained, and the visual quality is improved;at the same time, the lens can simultaneously accommodate high-order aberrations and better adapt to slight intraocular lens deviations, the lens power and the sensitivity of image quality pair implantation sites are reduced, and surgical reset is reduced.

Description

technical field [0001] The invention relates to the technical field of intraocular lenses, in particular to an axial spherical aberration progressively modulated aspheric intraocular lens designed through non-constant characterization equations. Background technique [0002] The natural lens in the human eye is a colorless, transparent and very soft lens when a newborn baby is born. With the increase of age, the change of external conditions, such as the influence of ultraviolet radiation and other factors, the natural lens will change. It becomes harder and harder and becomes a colored lens. When people live to more than 50 to 60 years old, about 30% of the natural lens will become brownish-yellow and cloudy, and harden. When this happens, the natural lens (that is, the cataract lens) will have to be replaced with an artificial lens to restore the eyesight of the cataract patient. [0003] A typical intraocular lens consists of an optical lens that focuses light onto the o...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2240/001
Inventor 麻健勇曹晶辉廖秀高冯振宇
Owner WUXI VISION PRO
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