Glasses with resin lenses or glass lenses

For myopia, glasses are a must; in the process of purchasing glasses, you will find that there are so many materials, models, and specifications of glasses, which makes you dazzled and you have no choice, what spherical, aspheric, plastic, etc. Shaped glasses...... But if it is divided from the material, it is generally only divided into resin and glass. Today, the editor shares my point of view: choose resin lenses or glass lenses for glasses?

In terms of weight:

Now when I go to an optical store, the clerk rarely recommends glass lenses; because glass lenses are heavier than resin, glasses are worn for a long time, and the heavy lenses are pressed on the bridge of the nose, usually leaving two deep marks, and it will be very painful. Pain; so there are fewer glass lenses.

Compared with drop resistance:

The material of the resin lens is made of resin, which is relatively resistant to falling. For children who like to play, the resin lens will not break even if it falls on the ground; If it is touched by a ball, it is likely to be broken. When the editor was in school, I saw some people's glasses were hit by a basketball, fell to the ground, and the lenses shattered.

From the price comparison:

Resin lenses are relatively expensive, and a pair of resin lenses with better quality can range from more than 300 yuan to as many as thousands. With a pair of frames, a pair of glasses costs at least 700 yuan; A hundred dollars will do. Glasses are very expensive and need to be changed frequently, everyone should take good care of your eyesight and don't be short-sighted!

From the perspective of wear resistance:

After all, resin lenses are extracted from plants, so they cannot withstand hard scratches, while glass lenses are industrial materials with high wear resistance; I think that if the prescription is relatively shallow and people who don’t need to wear glasses often, they can be equipped with A pair of glass glasses.

From the refractive index compared to:

Resin glasses are thicker than glass lenses, because their refractive index is lower than that of glass lenses, so the light transmittance is also slightly lower. Usually, the refractive index of resin lenses is only 92%, which is much lower than that of glass.

In terms of dirt resistance:

If the surface of resin glasses is scratched, it is easy to accumulate oil stains, just like ordinary plexiglass; compared with resin lenses, glass is more resistant to scratches, so it is also resistant to dirt. Therefore, when you buy glasses, you must take good care of them and put them in the glasses case when not in use. When cleaning the glasses, use the accessories to scrub them; do not scrub them with cleaning balls and coarse cloths.