Highly-hydrophilic colored contact lens material preparation method

Abstract

The present invention discloses a highly-hydrophilic colored contact lens material preparation method, and relates to the technical field of spectacle production, wherein the highly-hydrophilic colored contact lens material preparation method comprises four processes such as raw material mixing, mold molding, curing synthesis and soaking. According to the process method, the addition amount of the transparent blue material is strictly controlled so as to significantly improve the light transmittance of the lens material, wherein the average light transmittance is at least more than or equal to 90%; benzoin ethyl ether is adopted as the initiator of the reaction of N-vinyl pyrrolidone and hydroxyethyl B-methacrylate so as to substantially improve the reaction rate, provide the high production efficiency and provide conditions for the mass-production under the factory condition; during the curing synthesis operation process, the irradiation time interval and the standing time of the ultraviolet ray lamp are strictly controlled, such that the reaction of the monomer is complete and efficient, and the prepared lens material has characteristics of good quality, high moisture content and high tensile strength; and the production process has characteristics of simple operation, practicality, easy mastering, and being worthy of promotion .

Description

technical field [0001] The invention relates to the technical field of lens production, in particular to a method for preparing a highly hydrophilic colored contact lens material. Background technique [0002] With the continuous development of science and technology, more and more people like to wear colored contact lenses. On the one hand, it plays a role in correcting vision. On the other hand, it is beautiful, comfortable and convenient to wear. The total number of contact lenses has increased dozens of times, and color contact lenses are gradually becoming popular driven by the global fashion industry. There are mainly two methods commonly used to prepare color contact lenses: printing type and interlayer type. The printing type is dry contact lens Printing patterns on the iris, this method is simple, but it is easy to cause unevenness on the surface of the lens, which will make the patient feel a serious foreign body sensation when wearing it, which may affect vision. ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of science and technology, more and more people like to wear colored contact lenses. On the one hand, it plays a role in correcting vision. On the other hand, it is beautiful, comfortable and convenient to wear. The total number of contact lenses has increased dozens of times, and color contact lenses are gradually becoming popular driven by the global fashion industry. There are mainly two methods commonly used to prepare color contact lenses: printing type and interlayer type. The printing type is dry contact lens Printing patterns on the iris, this method is simple, but it is easy to cause unevenness on the surface of the lens, which will make the patient feel a serious foreign body sensation when wearing it, which may affect vision. Filling the incision with coloring material is very cumbersome and cannot be mass-produced. Therefore, there is an urgent need to develop a safe, comfortable, and high-color-fast color contact lens manufacturing method.