Ha a breath on the lens, and then wipe the glasses with glasses cloth or paper towel... This string of actions believe that friends wearing glasses are familiar with, but we are accustomed to this operation is really correct?

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Wiping glasses with glasses cloth is easy to wear the lenses

Many people think that the cloth they sent when buying glasses is the cloth for wiping glasses. In fact, it is not, its role is only to protect the glasses, to avoid the glasses and glasses case collision. In addition, most of the glasses cloth materials on the market today are not delicate enough, and dust and small foreign bodies are easy to remain on the cloth and the lens. If you directly use the glasses cloth to dry wipe, it is equivalent to rubbing the lens with small particles.

The dust or oil of the lens is actually mostly the grease on our eyelashes, the horny on the face, the fine gravel in the air, etc. Especially gravel, although they look very weak, but in fact for the lens and coating is very hard. If you use glasses cloth in the left gravel glasses dry, it will be more rub wear more serious, will eventually make the lens "scarred".

Since the glasses cloth is not used to wipe the lens, then how to do a good job in daily life glasses cleaning and maintenance:

The first step is to fold the lens arm and use a small water flow to wash the dust and dirt in all parts of the glasses, especially don't forget the corners, where it is easier to hide dirt.

The second step is to evenly cover the front and back of the glasses with cleaning liquid (preferably neutral cleaning liquid). If you use detergent, please spray it directly. If you use detergent, dilute it with water on your hands first, rub it out of foam, then apply it on the surface of the lens, and then rinse it off with clean water.

The third step is to use a softer paper towel to dry the water droplets on the lens, and finally put it into the glasses case.

It should be noted that during the washing process, do not wash with hot water, because the film on the surface of the lens may be burned when it comes into contact with hot water (such as 40 to 60 degrees Celsius), so it is not recommended Put the glasses in strong sunlight. When using a paper towel to suck the water on the lens, remember not to rub it back and forth forcefully, otherwise, horizontal or vertical scratches will appear over time.

Although we look at the lens surface is transparent, but its surface is actually distributed with multiple layers of different uses of the coating, there is an increase in transmittance, there is an increase in abrasion resistance, as well as an increase in anti-fouling ability. Therefore, wiping glasses is not to wipe the lens body, but to wipe the coating attached to the mirror surface. If the quality of the coating or lens is not very good, coupled with the incorrect wiping method, the coating will be damaged, or even directly off. If you lose the protection of the coating, the lens will be more likely to wear out.

Does the lens need to be replaced immediately?

What should I do if my glasses are worn out? Can I only change my glasses directly?

We should observe the wear position and degree of glasses. If only the lens around the wear, does not affect the center of the lens, the glasses can continue to wear for a period of time, wait until the degree of change, and then replace the lens; if the wear is very obvious or located in the center of the lens, this situation needs to replace the lens as soon as possible.

Long-term wearing of scratched glasses is more likely to lead to an increase in the degree, especially for teenagers. The light will become messy through these scratches, which not only affects the clarity, but also causes great damage to the eyes. We wear glasses to see more clearly and protect our eyes. If the glasses are damaged, it will be counterproductive to continue wearing them.

In addition, damage to the lens may lead to a reduction in the protective function of the lens, such as the weakening of the anti-ultraviolet function, and the inability to block harmful light from entering the eyes. However, the lenses of some glasses are UV-resistant, so scratches on the surface do not necessarily destroy this function.

In summary, for the glasses family, it is more important to protect the glasses, usually do a good job of cleaning and nursing the glasses, reduce the damage to the glasses, and extend the life of the glasses. When the lens is spent, it should be checked in time and asked by a professional doctor to decide whether the lens needs to be replaced. For friends who do not wear glasses, they should learn to protect their eyes and avoid myopia caused by excessive use of eyes.

(Science and Technology Daily Source: Digital Beijing Science Center)