Contact lens surface hydrophilic coating method

Abstract

The invention provides a contact lens surface hydrophilic coating method. The method comprises the steps: firstly, performing a hydration process to make a non-hydrated polymer form a hydrated polymer, and sequentially making the hydrated polymer contact with a first solution containing a high-molecular compound and a second solution containing a high-molecular compound at a specific temperature between 50 DEG C and 70 DEG C to complete the first hydration process and the second hydration process. According to contact lenses obtained according to the steps, the contact angle ranges from 30 degrees to 65 degrees, protein and lipid are not prone to being deposited on the surfaces of the contact lenses, and good comfort is provided for a user when the user wears the contact lenses.

Description

technical field [0001] The invention relates to a method for manufacturing a medical device for correcting vision, in particular to a method for coating a surface of a contact lens with a hydrophilic coating. Background technique [0002] Contact lenses have been developed for many years. At first, scientists held the idea of ​​wearing the lenses directly on the eyes and developed contact lenses made of glass. However, not only are they uncomfortable, but the low oxygen permeability of the glass material can easily cause eye diseases. Later, other materials were adopted successively, from the earliest polymethyl methacrylate (PMMA) material to the modern rigid gas permeable contact lens (RGP) material rigid contact lens, and polymethacrylate hydroxyl Soft contact lenses made of ethyl ester (HEMA) or hydrogel, etc. [0003] Contact lenses do not have the hindrance of traditional spectacle frames, do not affect the wearer's appearance, and do not have the risk of shattering l...

AI Technical Summary

Problems solved by technology

[0002] Contact lenses have been developed for many years. At first, scientists held the idea of ​​wearing the lenses directly on the eyes and developed cont

Images