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Comfortable corneal contact lens for treating myopia

A contact lens and myopia technology, applied in glasses/goggles, optics, instruments, etc., can solve the problem of easy damage to the edge of the patient, reduce the risk of edge damage of the lens, and reduce the effect of foreign body sensation

Active Publication Date: 2014-09-10
WANMA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the material factors of the current rigid contact lenses commonly used for myopia treatment, the edges are easily damaged during production and use by patients.

Method used

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  • Comfortable corneal contact lens for treating myopia
  • Comfortable corneal contact lens for treating myopia
  • Comfortable corneal contact lens for treating myopia

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

[0019] As shown in the figure, a comfortable contact lens for myopia treatment includes a hard lens 1, a soft edge 2 and a tear zone 3; the hard lens is made of a gas-permeable hard material (RGP), which can It is made into a rotary shape by cutting method, and the inner surface is from the middle to the periphery (such as figure 1 As shown) there are base arc 1-1, pre-inversion arc 1-2, inversion arc 1-3, pre-positioning arc 1-4, positioning arc 1-5, distal peripheral arc 1-6, Peripheral arcs 1-7. The gas permeable hard material is one of several hard contact lens materials such as fluorosilicon acrylate, silicone acrylic, fluorinated silicone polymer and the like.

[0020] The base arc 1-1 produces pressure through the action of tears, which can reduce the diopter of the cornea; the pre-inversion a...

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Abstract

The invention relates to a comfortable corneal contact lens for treating myopia and aims at providing the corneal contact lens with the characteristics of comfortableness, high permeability and difficult damage. The technical scheme is as follows: the corneal contact lens comprises a rigid lens and a soft edge, wherein the rigid lens is rotor-shaped and is made of breathable rigid materials; the soft edge is made of hydration polymer and covers the peripheral area of the rigid lens; and a tear area for containing tears is arranged between the rigid lens and the soft edge.

Description

technical field [0001] The invention relates to a corneal contact lens, in particular to a comfortable corneal contact lens for treating myopia. Background technique [0002] At present, patients have a strong foreign body sensation when wearing rigid contact lenses commonly used for myopia treatment, and the patient experience is not good. During the day, the eyeballs rotate and the eyelids flicker more frequently, and the friction between the contact lens and the eyelids brings a strong foreign body sensation. At night, there is less eye movement and eyelid flickering, but the tear exchange between the lens and the corneal reservoir will also decrease, making it difficult to remove the lens the next morning. Some patients even need to instill 1-2 eye drops and forcefully turn their eyes to take off the lens. In addition, due to the material factors of the current rigid contact lenses commonly used for myopia treatment, the edges are easily damaged during manufacturing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04
Inventor 盛涛
Owner WANMA TECH CO LTD
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