Are your glasses "extended service"? How long do glasses last?

Glasses help us see this beautiful world more clearly, comfortably and for a long time, so how long is the service life of your "only" pair of glasses?

The service life of glasses is generally affected by three aspects: the frame lens itself, usage habits and diopter changes.

1. Frame and lens:

Spectacle frames are divided into two types: plate and alloy, and alloy frames include: ordinary alloy, pure titanium, gold-coated or K gold frames. Under normal circumstances, as long as it is not affected by additional external forces, the service life of the frame is about 3 years.

However, if the height of the spectacle frame is uneven; in addition, if the nose pads fall off or the screws slip off, you need to find a professional ophthalmology center or optical shop for personalized adjustment of the spectacle frame.

Compared with the frame, the lens is more delicate, because the currently sold lenses are basically coated resin lenses, the film layer is easily damaged during use, and the lens film layer is more likely to stick to dust and oil after being damaged. affect clarity.

Therefore, the normal service life of a pair of lenses is 2-3 years. If it is used beyond the period, it will affect the visual quality.

Of course, not all lenses can be used for 2-3 years. If you wipe the lens with a rough paper towel or clothes during use, the lens will be severely scratched;

Or taking the resin lens to a sauna room, or placing it in a high-temperature car to expose the lens to cracking, may cause the glasses to be unable to continue to be worn.

2. Usage habits:

The use time of glasses is also closely related to the usage habits. The following are the precautions for wearing glasses:

First of all, the glasses should be removed and worn with both hands to avoid deformation of the frame;

Secondly, when the glasses are not in use, they need to be stored in the glasses case; when placed on the table, face up; avoid sharp objects such as keys from scratching the lenses;

Third: The resin is not resistant to high temperature, avoid taking it to the sauna to avoid cracking of the film layer;

Fourth: When the lens is dirty, wash it with running tap water first, and then wipe it in one direction with a lens cloth;

Finally: During the use of glasses, you should go back to the hospital or optical shop regularly to adjust or maintain the frames.

3. Diopters:

Adolescents before the age of 18 have rapid refraction changes. It is generally recommended to recheck their vision every 6 months, and adults also need to recheck their photometric changes once a year. If the diopter changes ≥ 0.50D, it is recommended to replace the lens.

Everyone who wears glasses, a pair of clear, comfortable and durable glasses is very important to our visual quality. We must treat them well when using them. Please check whether your glasses are "extended service"!