Multi-area contact lens with property of controlling progression of myopia and application method of multi-area contact lens

A contact lens and application method technology, applied in the field of vision correction, can solve the problems of photophobia, lack of a clear relationship and increase in the size of the defocus around the human eye of the contact lens, and achieve the effect of reducing the difficulty of processing
CN109407342AInactive Publication Date: 2019-03-01NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANKAI UNIV
Publication Date
2019-03-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a multi-area contact lens with a property of controlling progression of myopia and an application method of the multi-area contact lens. The multi-area contact lens comprises alens body, wherein the lens body comprises a myopia correction area, a myopia treatment area and a connection area for fixing wearing of the contact lens, the myopia correction area is an area capableof completely correcting myopia vision, and the myopia treatment area is an area capable of generating myopic defocusing along the peripheral retina. The multi-area contact lens with the property ofcontrolling the progression of the myopia and the application method of the multi-area contact lens have the advantages that the front surface of the lens body is provided with rotationally symmetrical multi-area aspheric surface / spherical surface profiles so that the use of the aspheric surface can be avoided, thereby reducing the processing difficulty, surface profile parameters of all areas onthe front surface of the lens body can be adjusted flexibly, and by adjusting the size of the area and size of additional refractive power of all the areas of the lens body, the correction ability ofthe central vision and the size of provided peripheral myopic defocusing can be effectively adjusted, thereby being capable of providing personalized customization according to different individual needs.
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Description

technical field

[0001] The invention relates to the technical field of vision correction, in particular to a multi-region contact lens capable of controlling the progression of myopia and an application method thereof. Background technique

[0002] Myopia is by far the most common refractive error among children and adolescents in most parts of the world. In addition, the age of onset of myopia is getting younger in many countries, and an earlier age of onset may accelerate the progression of myopia, which in turn increases the severity of myopia and increases the risk of related eye diseases such as cataracts, glaucoma, retinal degeneration, etc. risk. The design of contact lenses with the ability to control the progression of myopia is expected to slow down the progression of myopia in children and adolescents, and has potential application value.

[0003] The current methods of controlling the progression of myopia mainly include atropine, orthokeratology lenses, bifoca...

Claims

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