For glasses, the lens is the most important and the most effective, and it is the core of the glasses. Regardless of the material of the lens, as long as it is used for a long time, some dust and dirt will be generated on the surface of the lens, so regular maintenance is required. How to clean the lens to ensure that the lens is clean and hygienic, and will not scratch the lens, let's take a look at it together. Before cleaning the lens, you can rinse it with clean water or use a special cleaner. After washing, let it dry for a minute or so, and then use a professional cleaning cloth to wipe the glasses slowly, not too hard. Because some lenses are more likely to be scratched, you can use shampoo or shower gel to clean them, because they are relatively oily and can form a protective film after washing. At the same time, they are also waterproof and anti-fog. When cleaning the lens, remember to rub the pad of your finger close to the lens to try to avoid scratching the lens with your fingernail. Generally, regular optical shops usually use cleaning liquid when cleaning the glasses for customers. It is the same as the water we usually use for cleaning. It does not contain any fibers and avoids scratches on the lenses during the cleaning process. But generally speaking, most people still like to wash with water, but when cleaning the lens with water, pay attention to: <一>. When washing the lens, the water flow should not be too strong, just a little bit smaller; the angle between the lens and the water flow is the best It's about 45 degrees, and rinse slowly. <2>. To clean the lenses, I think it’s better to go to an optical shop, because after some patients have cleaned themselves, their vision is not as clean as before, so when they can’t handle it, it’s best to go to the optical shop to clean. In this way, the cleaning effect is more assured and safer.