A kind of corneal contact lens polishing liquid and preparation method thereof

Abstract

The invention relates to a corneal contact lens polishing solution which comprises the following components in parts by weight: 10-30 parts of inorganic polishing powder, 0.5-5 parts of dispersing agent, 1-15 parts of thickening agent, 10-30 parts of moistening agent, 0.1-5 parts of surfactant and 100 parts of water. A preparation method of the corneal contact lens polishing solution comprises the following steps: (1) putting 100 parts by weight of hot water into a beaker, adding 10-30 parts by weight of inorganic polishing powder and 0.5-5 parts by weight of dispersing agent into the hot water, and stirring and dispersing till the water temperature is reduced to be the room temperature, so as to obtain suspension; (2) adding 1-15 parts by weight of thickening agent into the suspension, and stirring till the thickening agent is completely decomposed so as to obtain a mixture solution; (3) adding 10-30 parts by weight of moistening agent and 0.1-5 parts by weight of surfactant into the mixture solution of the step (2) at one time, and continuing stirring till a uniform mixture solution is obtained, that is, the high-performance polishing solution for hard contact lenses.

Description

technical field [0001] The invention relates to the field of corneal contact lenses, in particular to a contact lens polishing solution and a preparation method thereof. Background technique [0002] RGP is a kind of rigid contact lens that can provide good optical quality. It is mostly used clinically to treat diseases such as keratoconus, high myopia, and anisometropia. In recent years, it has also been gradually used to treat myopia in children and adolescents. As a special RGP lens, orthokeratology lenses have the outstanding advantage of being used for "orthopedics", that is, to improve vision by changing the shape of the cornea collection. Its orthokeratology effect is similar to that of laser surgery, but different from laser surgery, the effect of orthokeratology lens is temporary and recoverable, and it is an effective and reversible treatment method for non-surgical removal of myopia glasses. Effectively reduce the risk of irreversible damage caused by surgery. W...

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Problems solved by technology

[0004] (1) The poor dispersion of inorganic polishing powder in the organic system makes it difficult to evenly disperse the polishing powder in the system. Even if it is pre-surface treated, it still cannot fundamentally improve the dispersion of the polishing powder in the organic system

Because the polishing powder is not effectively dispersed, it is easy to agglomerate into larger particles, which directly affects the polishing effect and increases the chance of scratches on the lens surface;

[0005] (2) The cost of the oily system is high, which brings great inconvenience to the subsequent processing of the lens. At the same time, the discarded polishing fluid pollutes the environment and does not conform to the concept of green environmental protection;

[0006] (3) The polishing liquid of the organic system greatly increases the production cost, and organic compounds such as methanol have high toxicity, which puts higher requirements on the production environment

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