Definition of glasses

glasses It is a notion that refers to the glasses whose fastening is done behind the head or taking advantage of the structure of the ears. The glasses, meanwhile, are optical instruments which include two glasses to favor the vision of the person who uses them.

The term is usually used in the plural: glasses. It is important to note that, in the language colloquial, glassesglasses Y glasses They are concepts that are used as synonyms, although each one of them predominates in different Spanish-speaking regions.

For example: “Where have I left my glasses? I want to read the newspaper and I can’t find them”“My mother gave me sunglasses for my birthday”“Take off your glasses to play football: otherwise you can get hurt”.

The glasses consist of a frame either mount that attaches to the glasses. The frame has two sideburns that rest on the ears and of a bow which is located above the nose. In this way, the lenses are right in front of the user’s eyes, which can correct vision defects, such as astigmatism wave myopia.

Spectacle frames were originally made of steel or iron. Over time, manufacturers began to use resins. Nowadays, it is usual to resort to titanium alloys either aluminum. As for the lenses, we can find them made with crystalplastic polymers either polycarbonate.

Beyond the glasses whose lenses allow the correction of defects of the vision, there are also other types of glasses. The Sunglasses They feature dark lenses to block ultraviolet rays and protect the eyes from sunlight. In addition, there are protective glasses that are used in certain trades and even in the field of sports.

Sunglasses are one of the most common accessories in hot weather, although in certain parts of the world they are worn throughout the year. It is a product that is very useful in summer to prevent sunlight from hindering our movement on public roads, but it also serves to protect our eyes when we are outdoors. During summer vacations at the beach, for example, most people wear them.

GlassesThe cleaning Removing glasses is an activity that takes time to learn to master, especially since at first it is not easy to leave them completely free of stains and this generates discomfort that can lead to headaches or interference in a treatment. There are several products designed specifically for this task, although it is also possible to carry it out without them.

One of the most common products is marketed as a spray, in small bottles whose content is a liquid that cleans the lenses of glasses without leaving residues that can cause scratches. These sprays are usually sold together with microfiber cloths, which are great for spreading the liquid around and then drying the crystals for a nice finish.

It is important not to spray too much liquid on the goggles, to avoid creating a “paste”. Finding the sweet spot takes time. There is also a product that instead of a sprinkler consists of a bottle in whose beak there is a sponge that we must moisten and then pass it through each of the lenses. The final step is always to dry the glasses with the microfiber cloth until not a single stain is visible.

An alternative to these products is to use tap water and a soap for the hands, although in areas with a lot of lime this can cause marks on the crystals.