Out-of-focus contact lens for controlling myopia

Abstract

The invention discloses an out-of-focus contact lens for controlling myopia. The out-of-focus contact lens comprises: a contact lens body having a first myopia diopter area located in the center, a second out-of-focus diopter area surrounding the first myopia diopter area, and a third peripheral diopter area surrounding the second out-of-focus diopter area, wherein the first myopia diopter area is hexagonal; and a plurality of independent refraction units are densely distributed in the second out-of-focus diopter area, and the diopters of the refraction units are different. The hexagonal first myopia diopter area is arranged in the center of the contact lens to meet the central eye use requirement, and the plurality of refraction units are arranged in the peripheral second out-of-focus diopter area to achieve positive and negative diopter increase, ensure the requirement that a user looks up and left and right visual areas, achieve out-of-focus conversion and avoid eye discomfort of teenagers, the degree is deepened, and myopia prevention and control are enhanced.

Description

technical field [0001] The invention belongs to the technical field of contact lenses, in particular to a defocus contact lens for controlling myopia. Background technique [0002] The defocus degree of traditional contact lenses with vision control function is usually designed to increase the diopter rapidly after leaving the central area. The change in diopter is drastic, which makes the wearer feel serious discomfort and cannot cooperate with the treatment for a long time. The effect of vision control is greatly reduced. Furthermore, the traditional contact lenses with positive and negative identification functions are provided with small concave grooves or raised dots on the surface of the contact lenses. However, the small concave grooves are easy to break the contact lenses, and the convex The raised dots are easy to make the wearer feel a serious foreign body sensation. In addition, traditional contact lenses with vision control function cannot control the luminou...

AI Technical Summary

Problems solved by technology

[0002] The defocus degree of traditional contact lenses with vision control function is usually designed to increase the diopter rapidly after leaving the central area. The change in diopter is drastic, which makes the wearer feel serious discomfort and cannot cooperate with the treatment for a long time. Causes the effect of vision control to be greatly reduced

Furthermore, the traditional contact lenses with positive and negative identification functions are provided with small concave grooves or raised dots on the surface of the contact lenses. However, the small concave grooves are easy to break the contact lenses, and the convex The raised dots are easy to make the wearer feel a serious foreign body sensation

In addition, traditional contact lenses with vision control function cannot control the luminous flux. Too much luminous flux will easily cause the wearer to be sensitive to light, and too little luminous flux will cause blurred images.

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