Multifunctional contact lens resistant to ultraviolet ray, diffraction ray and blue ray

Abstract

The invention provides a multifunctional contact lens resistant to ultraviolet ray, diffraction ray and blue ray. The contact lens comprises a lens body, wherein the lens body comprises a lens basic layer which adopts a transparent cambered surface structure matched with the ocular cornea; a circular coloring part with a diameter of 6.3-8.0 mm used for neutralizing blue ray color is arranged at the lens basic layer; or the multifunctional contact lens further comprises an optical film which is attached to the surface, far away from the ocular cornea, of the lens basic layer; the optical film is used for reflecting or neutralizing the blue ray. The multifunctional contact lens resistant to ultraviolet ray, diffraction ray and blue ray, provided by the invention has the function of resisting blue ray, is capable of ensuring relatively high light transmittance on the basis of avoiding the injuries on the eye due to the unnecessary strong rays and diffraction rays, and is suitable for wearing under the environments with strong sunshine, computers, televisions, mobile phones or workshops.

Description

technical field [0001] This invention relates to contact lenses. More specifically, the present invention relates to a multifunctional contact lens with anti-ultraviolet, diffracted light and blue light, which is suitable for wearing under strong sunlight or harmful light environments such as computers, TVs, mobile phones or workshops. Background technique [0002] Contact lenses, also called contact lenses, are lenses worn on the cornea of ​​the eye to correct vision or protect the eyes. Contact lenses not only improve myopia, hyperopia, astigmatism, etc. Light is not correct for patients with great improvement. Moreover, it has a wide field of vision and realistic vision. In addition, it has also played a special role in controlling the development of myopia and astigmatism in young people, and treating special eye diseases. [0003] Sunlight, computers, TVs, mobile phones or workshops contain harmful rays such as ultraviolet rays and blue rays. Among them, blue light i...

AI Technical Summary

Problems solved by technology

[0004] The cornea and lens of the human eye are easily damaged by ultraviolet rays. Ultraviolet rays have a great impact on the eyeball. Ultraviolet rays are harmful to the eyes. If the eyes are exposed to the hot sun for a long time, the first thing to be affected is the black eyeball. If a large amount of exposure to the sun will cause corneal injury , people's eyes will immediately appear pain, discomfort, tears and other symptoms; secondly, the lens is damaged, and the eyes are exposed to ultraviolet rays for a long time, which will interrupt the evenly distributed crystal chains and become irregular, reducing light transmission. Second, the retina is also deeply affected by ultraviolet rays. The retina is located at the nerves at the back of the eyeball. Once damaged, it cannot be restored. It is generally called macular degeneration. The use of sunglasses to protect the eyes is an essential means

[0005] Most of the existing contact lenses are used to correct vision or treat eye diseases, and their functions are relatively single. They cannot shield unnecessary strong light under strong light conditions. Strong light entering from around the pupil will affect normal vision.

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