When buying good sunglasses we found some that are polarized and others that are not. So, what exactly are polarized sunglasses? Is it one of those marketing terms that really offers no tangible benefit? Or is it an essential feature?
How they are different from unpolarized sunglasses and why they are important.
Before trying to understand how polarized glasses help, we must understand how the light around us works. The sunlight, once it reaches the earth, is absorbed, reflected and refracted in all kinds of forms by the thousands of elements that we see around us. This includes water, glass, plastics and even the ground. Once it is reflected, this light travels in a horizontal direction and hits our eyes causing visual discomfort, and in some cases, even temporary blindness.
Have you ever had the feeling that too much sunlight “blocks” the details of your eyesight, especially near bodies of water? That’s exactly what happens when you do not have glasses with vertical polarization.
offers in all its catalog sunglasses with polarized top quality so you can protect your eyes and the annoying reflections.
Vertical polarized glasses do not allow this harmful glare to affect your vision, which is crucial during driving. You do not want to be blinded even for a moment while driving with your family, do you?
Advantages of buying polarized glasses are:
Decreased visual discomfort
Clearer vision in daylight
Reduction of visual fatigue
However, all these advantages do not mean that the tinted windows are perfect in all situations. Reading text on LCD / LED screens with polarized sunglasses is very difficult and, sometimes, almost impossible, so if you’re in an outdoor profession that requires you to look at screens frequently, polarized sunglasses are not for you. Skiers have also reported difficulties in discerning between patches of snow and ice.
The best brands of sunglasses are often polarized and offer UV protection as well, but the fact that the glasses are polarized does not mean that it also offers UV protection. Be sure to check that your new pair of sunglasses is polarized and offers UV protection, it should be specifically mentioned.
Now, along with polarized lenses, you can also get one of the following types of sunglasses, according to preference:
Exactly as it sounds, mirror glasses have an outer layer that does not allow people to make eye contact with you because the lenses reflect all the light from outside. It’s also a fashion preference, of course, so if that’s your thing, get glasses with a mirror.
Photochromic lenses are lenses that darken with sunlight. They are basically activated with ultraviolet light and darken progressively in sunlight. Once inside, they slowly return to their transparent self. However, they are mainly for short-term use, and do not work as full sunglasses since they do not get as dark as most sunglasses.
These glasses are darker in the upper part and lighter in the lower part, to block the sunlight that comes above. Although individual gradients are primarily for cosmetic purposes, double-gradient glasses work well to protect your eyes from the top and bottom. In them, the lenses are dark at the top, clear in the middle and then dark again at the bottom.