Hard contact lens care composition containing sodium lactate and preparation method thereof

Abstract

The invention discloses a hard contact lens care composition containing sodium lactate and a preparation method thereof. The care composition is prepared from the following components: 0.05-0.5 part of sodium lactate, 0.01-0.1 part of a moisturizing agent, 0.05-5.0 parts of a tackifier, 0.2-1.2 parts of a buffering agent, 0.2-1.0 part of an isoosmotic adjustment agent, 0.00005-0.0005 part of a bactericide and pure water added until the total parts of the components are 100 parts, wherein the pH of the care composition is 6.5-8.0; the osmotic pressure is 240-320mosm/kg.H2O. Sodium lactate is used as a moisturizing component of the contact lens; meanwhile, sodium lactate contains water, so that the comfort of the customer on the contact lens can be effectively improved, and the irritation onthe eyes can be reduced; through the synergistic action between sodium lactate and the moisturizing agent, the contact lens can maintain good and lasting moisturizing and lubricating effect at the same time; the aggregation of precipitate on the lens can be reduced; the eyes can feel comfortable; the optical property of the contact lens can be maintained; the vision definition of the contact lenscan be improved.

Description

technical field [0001] The invention belongs to the field of eyeglass care, and in particular relates to a sodium lactate-containing hard contact lens care composition and a preparation method thereof. Background technique [0002] Common contact lenses currently on the market are mainly used to correct vision, protect eyeballs or increase the beauty of eyes. According to their material properties, they are divided into three types: hard, semi-rigid and soft. Among them, hard contact lenses are also called hard contact lenses. Silicone acrylate is the basic material. The surface of the lens material is hydrophobic due to the silicone group. Lipids, proteins and other organic components in tears and pollutants are easily adsorbed to the surface of the lens, especially when wearing the lens in a dry environment. It can speed up the precipitation of these pollutants, and you will feel discomfort such as dryness, burning sensation, and foreign body sensation in the eyes, and the...

AI Technical Summary

Problems solved by technology

[0002] Common contact lenses currently on the market are mainly used to correct vision, protect eyeballs or increase the beauty of eyes. According to their material properties, they are divided into three types: hard, semi-rigid and soft. Among them, hard contact lenses are also called hard contact lenses. Silicone acrylate is the basic material. The surface of the lens material is hydrophobic due to the silicone group. Lipids, proteins and other organic components in tears and pollutants are easily adsorbed to the surface of the lens, especially when wearing the lens in a dry environment. It can speed up the precipitation of these pollutants, and you will feel discomfort such as dryness, burning sensation, and foreign body sensation in the eyes, and the tear film on the surface of the cornea is divided into three layers, the outermost layer is the lipid layer, the middle is the water layer, and the last The inner layer is the mucus layer. Under normal circumstances, tears only need to moisten the cornea and conjunctiva. After wearing contact lenses, both sides of the lens need to be moistened to make the tear film thinner than normal, and the water evaporates faster. Therefore, dry eyes can also cause Eye soreness, dryness, foreign body sensation and other discomforts, people who wear rigid contact lenses for a long time, the lenses are easy to dry, which leads to a decrease in wearing comfort, so keeping the lenses moist can not only maintain the optical properties of the lenses, but also improve wearing comfort

At present, there is no shortage of moisturizing and lubricating drugs on the market, but there are still very limited care products that can be used exclusively for rigid contact lenses and can moisturize the lenses for a long time

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