Hard contact lens capable of relieving paracentral hyperopic defocus and manufacturing method of hard contact lens

A technology of contact lenses and manufacturing methods, applied in glasses/goggles, optics, instruments, etc., can solve problems such as acceleration, eye axis growth, and inability to take care of both

Active Publication Date: 2019-03-01
AUTEK CHINA
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  • Application Information

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Problems solved by technology

[0003] Traditional lens prescriptions focus on controlling the central vision, with the purpose of providing good central vision, but they cannot take into account the imaging position of the paracentral retina, resulting in paracentral hyperopia and defocus, which leads to the increase of the eye axis and accelerates the increase in the degree of myopia

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  • Hard contact lens capable of relieving paracentral hyperopic defocus and manufacturing method of hard contact lens
  • Hard contact lens capable of relieving paracentral hyperopic defocus and manufacturing method of hard contact lens
  • Hard contact lens capable of relieving paracentral hyperopic defocus and manufacturing method of hard contact lens

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Embodiment Construction

[0066] In order to further illustrate the features of the present invention, please refer to the following detailed description and accompanying drawings of the present invention. The accompanying drawings are for reference and description only, and are not intended to limit the protection scope of the present invention.

[0067] Such as figure 1 As shown, this embodiment discloses a hard contact lens for reducing paracentric hyperopic defocus, which includes an optical lens composed of multiple arc segments, the center of the lens is set as the optical zone, and the lens is sequentially arranged from the optical zone to the outside Defocus area, transition arc area and peripheral arc area. Including a curved lens, the optical lens includes a base curve 1 on the inner surface of the lens and a base curve 2 on the outer surface of the lens, the center of the optical lens is set as an optical zone, and the optical lens is sequentially provided with a defocus zone and a transiti...

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Abstract

The invention discloses a hard contact lens capable of relieving paracentral hyperopic defocus and a manufacturing method of the hard contact lens, and belongs to the technical field of manufacturingof glass lenses. The hard contact lens comprises an optical lens consisting of a multi-arc section, an optical area is arranged in the center of the lens, and the lens is outwards successively provided with a defocus area, a transition arc area and a peripheral arc area from the optical area. Besides the optical area arranged in the center of the optical lens, the optical area is further outwardsand successively provided with the defocus area, the transition arc area and the peripheral arc area additionally, while it determines that the optical area controls central vision, paracentral hyperopic defocus is relieved by the defocus area, thus, paracentral imaging on a retina or within the retina is implemented, and a purpose of relieving deepening of myopia is achieved effectively.

Description

technical field [0001] The invention relates to the technical field of spectacle lens manufacturing, in particular to a hard contact lens for reducing paracentric hyperopic defocus and a manufacturing method thereof. Background technique [0002] Paracentric hyperopic defocus is one of the theories of myopia deepening. The main reasons for the formation of paracentric hyperopic defocus are: (1) the refractive power of the corneal center is stronger than that of the corneal edge; (2) the retina is not a regular spherical shape, more close to an ellipse. These reasons lead to after myopia correction, the central area of ​​the retina is imaged behind the retina, forming paracentral hyperopic defocus, which will cause the eye axis to grow and increase the degree of myopia. According to research, the degree of myopia will increase for every 1 mm increase in the eye axis. will increase by 300 degrees. [0003] Traditional lens prescriptions focus on controlling central vision, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04G02C7/02
CPCG02C7/028G02C7/041
Inventor 陶悦群陈然柳翠英
Owner AUTEK CHINA
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