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High-oxygen-permeability orthokeratology lens

A technology of orthokeratology and high oxygen permeability, which is applied in glasses/goggles, optics, instruments, etc. It can solve the problems of eyelid discomfort, inconvenience for users to wear or take off the orthokeratology lens, easy to fall off, etc., and achieve comfortable wearing effect of effect

Pending Publication Date: 2021-02-26
杭州尤赫控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing orthokeratology lenses have the problem of high oxygen permeability and lens strength. In order to obtain higher oxygen permeability, existing orthokeratology lenses use lens materials with high oxygen permeability such as fluorosilicone acrylate, fluorine Although the addition of the material can increase the oxygen permeability of the material, it will reduce the mechanical strength of the material at the same time, making the lens vulnerable and easy to fall off
[0004] In addition, the central part (also known as the base arc area) of existing orthokeratology lenses is designed to be relatively flat in order to correct the eyeball. Although it is convenient to correct the eyeball inside, the relatively flat outer surface is likely to cause eyelid discomfort, and the shape does not allow the user to put on or take off orthokeratology lenses
[0005] On the other hand, there are many problems in the process of wearing orthokeratology lenses. For example, when users wear orthokeratology lenses, some users have bacteria on their hands. At the same time, during the cleaning process, the fingers are not cleaned. It may cause eye pollution. At the same time, it is not convenient for the user to take out the orthokeratology lens during placement, which will affect the operation of the worker, reduce the wearing efficiency, and affect the use

Method used

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  • High-oxygen-permeability orthokeratology lens
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] refer to Figure 1 to Figure 5 In the first embodiment shown, the orthokeratology lens includes a lens body 100 .

[0048] The lens body 100 can be made of hard RGP material or a combination of hard RGP material and soft RGP material. As an alternative, silicone methacrylate, fluorosilicone acrylate, polymethyl One of the methyl acrylates and their modified materials, such as modified materials with silicon or / and fluorine added.

[0049] Specifically, the lens body 100 includes: a central correction portion 101 , a peripheral extension portion 102 , an edge contact portion 103 , and a connection structure portion 104 .

[0050] Among them, the central correction part 101 is used to correct the central part of the eyeball 200; the peripheral extension part 102 is used to cover the peripheral part of the eyeball 200; the edge contact part 103 is used to contact the peripheral part of the eyeball 200.

[0051] Specifically, on the one hand, the central correcting part 101...

Embodiment 2

[0080] refer to Figure 6 to Figure 9 The second embodiment shown, an orthokeratology lens includes a lens body 300 .

[0081] The lens body 300 can be made of hard RGP material or a combination of hard RGP material and soft RGP material. As an alternative, silicone methacrylate, fluorosilicone acrylate, polymethyl One of the methyl acrylates and their modified materials, such as modified materials with silicon or / and fluorine added.

[0082] Specifically, the lens body 300 includes: a central correction portion 301 , a peripheral extension portion 302 , and an edge contact portion 303 .

[0083] Among them, the central correction part 301 is used to correct the central part of the eyeball 200; the peripheral extension part 302 is used to cover the peripheral part of the eyeball 200; the edge contact part 303 is used to contact the peripheral part of the eyeball 200.

[0084] Specifically, on the one hand, the central correcting part 301 physically compresses the central par...

Embodiment 3

[0112] refer to Figure 9 to Figure 14 The third embodiment shown, an orthokeratology lens includes a lens body 400 .

[0113] The lens body 400 can be made of hard RGP material or a combination of hard RGP material and soft RGP material. As an alternative, silicone methacrylate, fluorosilicone acrylate, polymethyl One of the methyl acrylates and their modified materials, such as modified materials with silicon or / and fluorine added.

[0114] Specifically, the lens body 400 includes: a central correction portion 401 , a peripheral extension portion 402 , and an edge contact portion 403 .

[0115] Among them, the central correction part 401 is used to correct the central part of the eyeball 300 ; the peripheral extension part 402 is used to cover the peripheral part of the eyeball 300 ; and the edge contact part 403 is used to contact the peripheral part of the eyeball 200 .

[0116] Specifically, on the one hand, the central correcting part 401 presses the central part of th...

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PUM

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Abstract

The invention discloses a high-oxygen permeability orthokeratology lens, which comprises a lens body, and is characterized in that the lens body comprises a central correction part for correcting thecentral part of an eyeball; a peripheral extension part for covering a peripheral portion of the eyeball; and an edge contact part for contacting the peripheral portion of the eyeball; wherein the peripheral extension part is arranged between the central correction part and the edge contact part; the central correction part comprises a central outer arc surface and a central inner arc surface, andthe central outer arc surface and the central inner arc surface are both forward arc surfaces; the maximum curvature radius of the central inner arc surface is greater than or equal to the maximum curvature radius of the central outer arc surface; the central outer cambered surface is a spherical cambered surface, an ellipsoidal cambered surface, a hyperbolic cambered surface or a combination ofthe spherical cambered surface, the ellipsoidal cambered surface and the hyperbolic cambered surface. The high-oxygen-permeability orthokeratology lens has the advantages that the orthodontic effect can be achieved, and the high-oxygen-permeability orthokeratology lens has a comfortable wearing effect.

Description

technical field [0001] The present application relates to an orthokeratology lens, in particular to a highly oxygen-permeable orthokeratology lens. Background technique [0002] Orthokeratology lenses are spectacle lenses made of gas permeable hard contact lens material, commonly known as RGP material, RGP is the abbreviation of Rigid Gas Permeable in English, that is, "permeable hard material"; Developed on the basis of hard material PMMA; the "OK lens" often seen in the market is actually orthokeratology lens; orthokeratology lens originated in the United States, after 50 years of development, it has been applied in 34 countries around the world It is composed of multiple arc segments; the lens and the tear layer are unevenly distributed, and the resulting hydrodynamic effect changes the geometric shape of the cornea. It is worn on the front of the cornea while sleeping, and gradually flattens the curvature of the cornea, thus effectively prevent the development of myopia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04
CPCG02C7/047
Inventor 许秋菊
Owner 杭州尤赫控股有限公司
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