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Multi-focus intraocular lens

A kind of intraocular lens, multi-focal technology, applied in the direction of intraocular lens, prosthesis, medical science, etc., can solve the problems of limited moving distance, low refractive index, thick lens, etc. Effect

Active Publication Date: 2017-09-29
WUXI VISION PRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low refractive index of the silicone material, the lens made is thicker, and the distance the lens moves in the eye's capsule bag is limited, so that the optical intensity change of the adjustable focus is limited

Method used

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  • Multi-focus intraocular lens
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  • Multi-focus intraocular lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] like figure 1 As shown, a multifocal intraocular lens includes an optical body 1, a first haptic 2 and a second haptic 3, and the optical body 1 is composed of a base layer 1-1 and a coating layer 1-2 ;

[0056] The base layer 1-1 is integrally formed with the first supporting haptic 2 and the second supporting haptic 3, using the same material;

[0057] The coating layer 1-2 is glued on the base layer 1-1 by injection molding;

[0058] The base layer 1-1 and the coating layer 1-2 are made of different materials.

[0059] 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.

[0060] The optical main body 1 has four optical surfaces along the optical axis, which are respectively optical surfaces a, b, c, and d in sequence, wherein optical surface a is close to the cornea, optical surface d is close to the retina, and optical surfaces b and c over...

Embodiment 2

[0074] like figure 2 As shown, a multifocal intraocular lens includes an optical body 1, a first haptic 2 and a second haptic 3, and the optical body 1 is composed of a base layer 1-1 and a coating layer 1-2 ;

[0075] The base layer 1-1 is integrally formed with the first supporting haptic 2 and the second supporting haptic 3, using the same material;

[0076] The coating layer 1-2 is glued on the base layer 1-1 by injection molding;

[0077] The base layer 1-1 and the coating layer 1-2 are made of different materials.

[0078] The surfaces of the first support haptic 2 and the second support haptic 3 are provided with raised frosting; the roughness of the frosting is greater than 40 μm.

[0079] The optical main body 1 has four optical surfaces along the optical axis, which are respectively optical surfaces a, b, c, and d in sequence, wherein optical surface a is close to the cornea, optical surface d is close to the retina, and optical surfaces b and c overlap. But loc...

Embodiment 3

[0093] like image 3 As shown, a multifocal intraocular lens includes an optical body 1, a first haptic 2 and a second haptic 3, and the optical body 1 is composed of a base layer 1-1 and a coating layer 1-2 ;

[0094] The base layer 1-1 is integrally formed with the first supporting haptic 2 and the second supporting haptic 3, using the same material;

[0095] The coating layer 1-2 is glued on the base layer 1-1 by injection molding;

[0096] The base layer 1-1 and the coating layer 1-2 are made of different materials.

[0097] The surfaces of the first support haptic 2 and the second support haptic 3 are provided with inclined sawtooth grooves; the height of the inclined sawtooth is greater than 40 μm.

[0098] The optical main body 1 has four optical surfaces along the optical axis, which are respectively optical surfaces a, b, c, and d in sequence, wherein optical surface a is close to the cornea, optical surface d is close to the retina, and optical surfaces b and c ov...

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Abstract

The invention discloses a multi-focus intraocular lens. The intraocular lens comprises an optical body (1), a first supporting loop (2) and a second supporting loop (3). The optical body (1) consists of a substrate layer (1-1) and a coating layer (1-2); the substrate layer (1-1), the first supporting loop (2) and the second supporting loop (3) are in an integral structure and integrally made of a same material; the coating layer (1-2) is adhered to the substrate layer (1-1) by means of plastic injection molding; the substrate layer (1-1) and the coating layer (1-2) are made of different materials. The optical body is a multi-focus optical area with double gluing structures, and by multiple binary faces (in a quantity of 2-4) and non-spherical faces in the optical area, secondary spectral chromatic aberration can be effectively corrected, image quality is improved, an additional focal power range is expanded, and full vision is realized.

Description

technical field [0001] The invention relates to the technical field of artificial lens, in particular to a multifocal artificial lens prepared by changing the optical surface structure of the optical zone. 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 turns into a colored lens. When people live to over 50 to 60 years old, about 30% of people's intraocular lens will become brownish yellow and cloudy, which not only loses the adjustable When this happens, the natural lens (the cataract lens) will have to be replaced with an artificial lens to restore vision to the cataract patient's eye. [0003] A typical intraocular lens consists of an optical lens that focuses light onto the optic nerve to enab...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/0077A61F2/1618A61F2/1637A61F2/164A61F2210/00A61F2240/002A61F2/1656
Inventor 廖秀高冯振宇曹晶辉杨勤
Owner WUXI VISION PRO
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