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Novel posterior chamber intraocular lens based on innovation biocompatibility hydrophobic material

An artificial lens and optical technology, applied in the direction of intraocular lens, eye implant, etc., can solve the problems of increasing positive spherical aberration and image quality degradation

Pending Publication Date: 2017-12-08
XIAN PILLAR BIOSCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spherical intraocular lenses with positive spherical aberration implanted in human eyes after cataract surgery in most cases will increase the positive spherical aberration of the entire visual system, and the increased positive spherical aberration will degrade the image quality on the retina, especially in the pupil rays This is even more so in the case of insufficient
[0006] Therefore, it is desired to provide an artificial lens that can reduce the decline in imaging quality caused by the increase in positive spherical aberration after the natural lens of the human eye is replaced, so as to establish a new vision system and improve imaging quality

Method used

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  • Novel posterior chamber intraocular lens based on innovation biocompatibility hydrophobic material
  • Novel posterior chamber intraocular lens based on innovation biocompatibility hydrophobic material
  • Novel posterior chamber intraocular lens based on innovation biocompatibility hydrophobic material

Examples

Experimental program
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Embodiment Construction

[0050] The following description is merely exemplary in nature and not restrictive of the invention.

[0051] see figure 1 , Intraocular lenses usually include a circular optical portion or optical body 1 and several haptics 2 connected thereto. Although only two supporting haptics are shown in the figure, those skilled in the art can understand that the number of haptics 2 can be more than 2, such as 3, 4 or more. see figure 2 , the optical part 1 has a front optical surface 3 and a rear optical surface 4, and the central thickness of the optical part is indicated by the reference number 5, the edge thickness is indicated by the reference number 6 and the diameter is indicated by the reference number 7.

[0052] according to figure 2 , the total diopter of the optical part is calculated according to the following formula:

[0053] = 1+ 2-(t / N_iol) 1 twenty one)

[0054] 1=(N_iol-N_medium) / R1 (2)

[0055] 2=(N_iol-N_medium) / R2 (3)

[0056] in: Indicates ...

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PUM

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Abstract

The invention relates to an aspherical intraocular lens. Specifically, the intraocular lens comprises an optical part with an optical surface and a plurality of belts connected with the optical part. The optical surface of the optical part is aspherical. After convergence light rays refracted by corneas radiate into the intraocular lens under the 5 mm effective optical aperture, the spherical aberration represented by the intraocular lens is -0.1-0 [mu]m.

Description

technical field [0001] The invention relates to an aspheric artificial lens, in particular to a weak aspheric artificial lens. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. What is stated in this section may or may not constitute prior art. [0003] An intraocular lens (IOL) is an artificial lens that can be implanted in the eye to replace the eye's natural lens, which is clouded by cataract disease, or used in refractive surgery to correct a person's misaligned vision. [0004] Most of the existing intraocular lenses are made of flexible materials, because they are usually folded or curled to be implanted in the eye through a 2-3 mm incision after reducing their area during surgery, so they are also called folded lenses. After the intraocular lens is implanted in the human eye, the relative position in the capsular bag is maintained by the interaction force between the hap...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/164A61F2/1613A61F2/16
Inventor 谢继红杨愔孙兴才D.M.伍德亚德B.K.欧沃米尔
Owner XIAN PILLAR BIOSCI CO LTD
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