Multifunctional hard cornea contact lens

A contact lens and multi-functional technology, applied in glasses/goggles, optics, instruments, etc., can solve the problems of high fitting complexity, irregular astigmatism, etc., to improve universality, improve edge comfort, improve The effect of marginal comfort

Pending Publication Date: 2019-09-24
AUTEK CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Irregular corneas are often accompanied by irregular astigmatis

Method used

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  • Multifunctional hard cornea contact lens
  • Multifunctional hard cornea contact lens
  • Multifunctional hard cornea contact lens

Examples

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Embodiment Construction

[0024] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Such as figure 1 As shown, the multifunctional rigid contact lens includes a lens body 1, and the lens body is sequentially formed with an optical zone 2, a defocus zone 3, a positioning zone 4 and a peripheral arc zone 5 from the center to the outside. The concave surface of the mirror body is called the rear surface, and the convex surface of the mirror body is called the front surface.

[0026] The higher the degree of myopia, the flatter the front surface of the mirror body, and the thicker the edge of the processed mirror body. This optical law exists not only in the manufacture of contact lenses, but also in the dispensing of frame glasses. When wearing frame glasses, the edge thickness of the lens is often reduced by changing the refractive index of the lens, but the material of the contact lens finite, which limits the choice ...

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Abstract

The invention provides a multifunctional hard cornea contact lens. The contact lens comprises a lens body. The lens body is provided with an optical area, a defocusing area, a positioning area and a peripheral arc area from a center to the outside world. Through designing luminosity of a tear layer, a maximum curvature of a positioning area and relative luminosity, a myopia defocusing design is satisfied, and simultaneously, irregular cornea fitting can be well considered, an edge comfort of existing RGP in a high myopia application is improved, and universality of the lens is increased.

Description

technical field [0001] The invention relates to the technical field of contact lenses for correcting glasses vision, in particular to a multifunctional rigid corneal contact lens. Background technique [0002] The existing rigid contact lenses are good news for high-degree patients, but as the degree of myopia increases, the thickness of the edge of the lens also increases significantly. Too thick edges will reduce the wearer's comfort experience, and may even fail to adapt to the lens. Wearing leads to the situation that it is impossible to insist on wearing it. [0003] The existing positioning design of the mid-peripheral region of rigid contact lenses can only be applied to one corneal shape, and its universality is limited. [0004] In addition, in order to better control the progression of myopia, according to the peripheral retinal defocus theory, when correcting myopia and ensuring the central macular vision of the retina, peripheral vision must be taken into accoun...

Claims

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Application Information

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IPC IPC(8): G02C7/04
CPCG02C7/044
Inventor 陶悦群柳翠英陈然
Owner AUTEK CHINA
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