Fix it yourself with a touch-up pen.
Many people may not be familiar with touch-up pens. In fact, the touch-up pen, as its name implies, is a tool to help repair the paint surface of an object. At first, the main purpose of touch-up pen was to touch up the paint of cars. When our car is scratched and the scratched area is not very large, it can be repaired with a complementary color pen. Now there are also special touch-up pens for repairing glasses on the market, and the price is relatively cheap. After we buy it, we can find out where the paint has fallen off the glasses, and then repair them carefully with a touch-up pen. The advantage of this method is that it is very convenient, but the disadvantage is that the life of the glasses is very short after painting, and we need to repair them every once in a while. The repaired parts will not be perfect, and some traces can be seen more or less. In addition, some poor quality touch-up pens may have a strong smell, so try to choose some well-known brands and good quality touch-up pens when buying.
Go to the optical shop to have it repaired.
Of course, in addition to buying your own touch-up pen for repair, you can also go directly to the optical shop for repair. Generally speaking, it's best to go to the store where we bought this pair of glasses. Because it sells our own glasses, the parts related to this glasses in the store are often relatively complete. Of course, the price of this method will be much higher than using a touch-up pen.
Under normal circumstances, if we can protect our glasses well and avoid being squeezed by some external forces, then put them in the glasses case before going to bed every night to avoid touching some liquids, and basically there will be no paint loss.