The cheapest eyeglasses also have a shelf life. People who wear glasses often have a misconception that they think glasses are durable goods, but in fact, glasses are consumables.

The fragility of a pair of glasses may far exceed your imagination, especially the lenses. If not properly maintained, they may break down within six months. But most people keep wearing them until their glasses are completely broken before going to replace them, without realizing that glasses also have a shelf life.

If properly maintained, the shelf life of a pair of glasses is approximately 2 years. If there is no maintenance or maintenance error for the glasses in daily life, the shelf life of this pair of glasses is about six months to one year. If it exceeds one year, the optical performance of this lens will be greatly reduced, which will bring additional visual fatigue to the eyes.

What are lenses most afraid of? Nowadays, the materials used for lenses are mainly resin lenses on eyeglass mart, which are divided into many types. Although these resin lenses have vastly different performances, they all have a fatal weakness: they are particularly prone to scratching. The small scratches on the surface of the lens are the main factor affecting the optical performance of the lens, and it is also the most fatal and irreversible factor. After the lens is scratched, it cannot be repaired.

The discountglasses are most afraid of scratches, which are one of the main reasons affecting the lifespan of lenses and the main factor damaging their optical performance.

The main reasons that affect the lifespan of lenses, let's take a look at the forms that can wear out the lenses. Scratches on the lens come from friction and collision, and we need to protect the lens by avoiding all unnecessary friction and collision.