Decorative color plain contact lenses, commonly known as cosmetic contact lenses, are contact lenses used to decorate and change the color of cornea. Colored flat contact lenses are colored to beautify and decorate the eyes. Color plain contact lenses are not cosmetics, but medical devices that must be strictly supervised like artificial heart valves and artificial kidneys. Because cosmetic contact lenses directly cover the corneal surface and are in close contact with eye tissues, it is directly related to the safety of human eyes and has high risks. In China, it is managed as a third-class medical device.

According to the suggestion of the National Medical Products Administration on the selection and use of decorative color flat contact lenses, decorative color flat contact lenses are contact lenses used to decorate and change the color of cornea. Because they directly cover the corneal surface and are in close contact with eye tissues, they are directly related to the safety of human eyes and have high risks. As the third kind of medical device management in China, it needs to pass the safety and effectiveness evaluation and obtain the medical device registration certificate before it can be produced, sold and used.

Use reminder

When purchasing cosmetic contact lenses, you should purchase them from a medical device business enterprise with relevant business license qualifications, and check whether the purchased products have obtained the medical device registration certificate, carefully check whether there is information such as the medical device registration certificate number, the name of the manufacturer, the production date, etc. on the product packaging, and properly keep the purchase certificate. In addition, you must pay attention to the oxygen permeability of the lens. The higher the oxygen permeability, the stronger the ability to deliver oxygen to the eyes.

When purchasing, you can refer to the suggestion of the International Association of Contact Lens Educators: the daily throwing oxygen transmittance is above 24DK/t, and the monthly throwing oxygen transmittance is above 87 dk/t. Wearing contact lenses is equivalent to wearing a mask with poor air permeability on the cornea. Doctors suggest that ordinary contact lenses should be worn within 6-8 hours, and cosmetic contact lenses should be worn for about 2 hours. If worn for a long time, it may cause eye complications.