Contact lens material, contact lens containing contact lens material and preparation method of contact lens

Abstract

The invention discloses a contact lens material. The contact lens material is prepared from the following raw materials: hydroxyethyl methacrylate, 2-methacryloyloxyethyl phosphorylcholine, azophenylmethacrylate, ethylene glycol dimethacrylate, 3-methacryloxypropyltrimethoxysilane, 2-(4-benzoyl-3-hydroxyphenoxy)ethyl acrylate, azodiisobutyronitrile, methacrylic acid and sodium hyaluronate. The preparation method of the contact lenses specifically comprises the following steps: (1) weighing raw materials; (2) respectively manufacturing a male die and a female die; (3) conducting pattern printing; (4) conducting blank forming; (5) conducting demoulding; and (6) conducting stripping to obtain a product. The contact lens material provided by the invention has the advantages of good hydrophilicity, high water content and good biocompatibility, so that the prepared contact lens has good oxygen permeability and water content, is comfortable to wear, also has ultraviolet protection and purplelight and blue light filtering functions, and better cares eyes.

Description

technical field [0001] The invention relates to the technical field of lens materials, in particular to a contact lens material, a contact lens containing the same and a preparation method thereof. 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 greatly improve myopia, hyperopia, astigmatism and other refractive errors in terms of appearance and convenience, but also have a wide field of vision and realistic vision. etc. have also played a special role. According to different materials, contact lenses can be divided into hard contact lenses, soft contact lenses and gas-permeable lenses. Among them, soft contact lenses were invented by Czechoslovakian chemist Otto Wichterle in 1960. Because they are more comfortable to wear, they are still used today. Has become the most popular type of lens. [0003] Soft contact lenses (SCL) are made of a hy...

AI Technical Summary

Problems solved by technology

According to different materials, soft contact lenses can be divided into hydrogel contact lenses and silicone hydrogel contact lenses. Among them, the main material of hydrogel contact lenses is poly 2-hydroxyethyl methacrylate. Low, generally more than one hydrophilic monomer such as N-vinylpyrrolidone (NVP), N,N-dimethylacrylamide (DMA), methacrylic acid (MAA) is added to increase the water content rate, but at the same time the tension and toughness of the hydrogel contact lens are reduced; the main material of the silicone hydrogel contact lens is a hydrophilic silicon-containing polymer material and a hydrophilic monomer, which can effectively increase the oxygen transmission rate, but due to The surface of the silicone hydrogel material is hydrophobic, making it less comfortable to wear

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