In the previous article, we discussed “What sunglasses were popular in the 80s?”. In this article, let’s talk about “Why is it rude to wear sunglasses inside?”.
Intense sunlight contains a lot of ultraviolet rays and infrared rays, which can damage the cornea and crystal of the eye. Wear a pair of sunglasses to block or absorb some of the light and reduce irritation to the eyes. However, many people wear sunglasses just as a decoration. There are many kinds of sunglasses, should be based on different needs and wearing occasions to choose.
Wearing sunglasses bases on the occasion
Sunglasses are a great tool for eye protection, but they can hurt your eyes if worn on all occasions. Some people don't take off their sunglasses even when they're indoors in order to be cool. In this regard, experts pointed out that no matter what kind of sunglasses to wear, wearing time should not be too long. Because people live in the sun for a long time, the eyes have adapted to the surrounding environment. It's good to work outdoors a lot and wear a pair of sunglasses. But wearing sunglasses indoors, or at dusk or even at night, can increase the burden on the eyes and harm eyes. And it feels impolite. Wearing sunglasses in communication with others, unable to make eye contact with the other person, gives the other person a feeling of distrust and insincerity.(https://www.koalaeye.com/collections/polarized-sunglasses)
How do I choose the correct sunglasses?
In terms of material, sunglasses can be divided into several categories depending on the type of lens. In the choice of sunglasses, the material is best to choose resin because of it high light transmission and good comfort. However, resin lenses are usually more expensive. In addition to resin lenses, glass lenses are also more common in sunglasses, and the price is relatively moderate.
In general, different coloring compounds are added to the glass to make sunglasses of different colors. Color-changing sunglasses are usually colorless and transparent indoors, and quickly turn gray or other colors when exposed to the sun. The color of these sunglasses can automatically become darker or lighter with the strength of the sun, suitable for myopia and farsighted eye patients.
In addition to glass lenses, most cheap sunglasses in the current market are made of transparent plastic lenses. This lens is plastic plated with a certain color, and has anti-ultraviolet effect, but the anti-infrared performance is poor. In addition, experts mention that plastic lenses have poor light transmission, are easy to cause eye discomfort, and affect vision seriously.
How do I tell if the colors of sunglasses are appropriate?
Sunglasses come in a number of colors, and in order to be cool, you can choose any color. But to protect your eyes, lenses that are too dark and too light are not suitable. If the color of the sunglasses is too light, it will not have the effect of protection. How do you tell if the color of the sunglasses is too light? If you wear them and others can still see your eyes, the color of your sunglasses is too light.
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