1. Look at the certificate: Contact lenses belong to Class III medical device products. Therefore, enterprises that produce contact lenses must hold a "Class III Medical Device Business Enterprise License" and the packaging must be marked with the National Food and Drug Administration Approval number from the bureau, and an inspection report or certificate of conformity from an authoritative department.
2. Check the certificate number: The contact lens product itself has a registration certificate number. Citizens can ask the merchant to issue the registration certificate number when purchasing. Only those with the registration certificate number can be sold in the market, otherwise Most likely fake.
3. Look at the import logo: If it is a foreign imported product, it must hold an "Imported Medical Device License" and an imported product inspection certificate, and register a domestic trademark. Then, the domestic agency company with legal personality declares to the customs and enters China. The product packaging must be printed with a complete Chinese logo, and indicate the import medical device license or medical device registration certificate number, as well as the company name and address of the domestic agent. and phone.
4. Look at the packaging: The inner and outer packaging of authentic products should be meticulous and clean, and the product brand and description, production time, manufacturer information, approval number, etc. should be clear at a glance. The lenses of contact lenses are in small bottles immersed in liquid medicine, and the mouth of the bottle is sealed with a thin aluminum sheet. When unpacking, you should pay attention to whether it is original, otherwise the quality will not be guaranteed, and it may even be a counterfeit product. In addition, authenticity can also be judged by the gloss of the bottle and the clarity of the printed text. Most fakes have obvious signs of shoddy workmanship such as lack of gloss and blurred fonts.
5. Look at the appearance: genuine contact lenses have bright colors, thin lenses, good transparency, non-toxicity, no impurities, no streaks, no spots, are soft enough after absorbing water, have good bendability, and are perfectly round. Smooth edges. If it is not transparent enough, is too hard, is deformed, or is unclean, it may be a defective or counterfeit product, or even a fake.
6. Look at the feeling: When you first wear a new product, your eyes will feel a slight foreign body sensation. This is normal. However, the breathability of contact lenses is very important. If your eyes feel suffocated after wearing them, it is definitely a poor-quality product. In about half an hour, the foreign body sensation in your eyes will basically disappear. If you feel eye discomfort for a long time, there may be a quality problem. .
7. Look at the brand: The quality of "color contact lenses" of well-known brands currently produced in China, such as "Johnson & Johnson", "Bausch & Lomb", "Haichang", etc., is generally good, and there are very few fakes. .
9. Look at the craftsmanship: You can use alcohol to wipe the contact lens, and you can identify the authenticity of the contact lens based on whether it fades or deforms. This method can only be used for "sandwiching", that is, sandwiching the color. The manufacturing process between two pieces of hydrogel is not a panacea. If it is a new process such as penetration, lamination, or knife cutting, it may fade. If you use alcohol-containing lotion to wipe the contact lens, artificial damage to the lens structure of the contact lens will cause it to deform, enlarge, and roll up to varying degrees. Therefore, using alcohol to wipe the contact lens cannot confirm whether it is fake. Some "genuine" contact lenses will fade. It is just a way to check whether the lens is made of sandwich technology and whether the process is qualified. If you want to wear reliable contact lens products, it is best to buy them from more professional and formal contact lenses websites or optical stores.
10. Look at the price: Due to restrictions on manufacturing processes, technological content and other conditions, the price of high-quality contact lenses is generally not too low. It is best for citizens not to buy contact lenses that are too low-priced.