Sunglasses are not just fashionable accessories, they also have a practical use. They protect the eyes (retina) from dangerous UV radiation and help to reduce unpleasant light reflections, for example while driving. However, not every pair of sunglasses can do that. To filter reflections, the sunglasses must be polarized. We explain to you what polarizing lenses are all about and Visit Sunglasshutusa you can buy such sunglasses.
What do I have to consider when buying sunglasses?
Aside from fashion, sunglasses should protect our eyes from UV radiation. The retina can be permanently damaged in intense sunlight, which is initially not felt, but loses years later. The prevention by the sunglasses, however, does not work by the color of the glasses. How light or dark these are only affects the glare protection. On the contrary, sunglasses that are very dark, but have no UV filter, additionally damage the eye, because they allow more UV light through the pupil than in bright conditions. If you want to buy new glasses, you should pay attention to these 3 factors that are crucial for the safety of your eyes:
- UV protection (CE mark)
What does polarized sunglasses mean?
If the sunglasses are polarized, then they have a built-in polarizing filter, which makes it possible to reduce light reflections or even remove them altogether. The difference between polarizing lenses and regular lenses is amazing, if not impressive. Especially for motorists polarizing lenses are recommended because they filter out all reflections of wet roads or headlights of other vehicles. This not only makes the ride more enjoyable, but also significantly safer.
Attention: Displays based on LCD technology – such as mobile phone displays or computer monitors – are also equipped with a polifilter. Unfortunately, this can cause the screen to look black and to look much worse. The reason for this is that the filter functions of the display and the polarized lenses overlap and amplify.
How much UV protection should sunglasses have?
All sunglasses sold in the EU must have a CE mark. This should be stamped or printed in the temple. The CE mark is a seal of quality and proves that the sunglasses conform to the essential safety requirements of EU directives. However, these are only the most basic security requirements, as not every pair of sunglasses is tested individually. If you want sunglasses that allow you to walk in the sun with a clear conscience because it protects your eyes really well, you should seek advice from an optometrist.
At the optician you can have each pair of glasses checked for UV protection with a special measuring device. Light has a high color spectrum with different wavelengths. Not all sunglasses protect against any radiation. So-called blue light can reach a wavelength of 480 nanometers. Sunglasses that even protect against it, provide the best possible protection for your eyes.
How to Tell if Your Sunglasses are Polarized?
Polarized lenses reduce glare on water, pavement, and other reflective surfaces. These special lenses make clear and clear colors, so you can see every detail of the open road, golf course, or mountain trail ahead. Check out our polarization guide for everything you need to know!
But not every pair of sunglasses is polarized! Trying to determine if your shades are polarized? We’ll show you one quick and easy way to learn if your sunglasses are polarized.
Tip: Incidentally, the price does not always decide on the quality, but rather on whether it is a branded product or not.
The glare protection of sunglasses
The glare protection itself does not protect the eyes from dangerous rays, but helps against the fact that the eye gets tired due to the constant brightness. Bright lighting conditions can lead to headaches and tired eyes over time. There are 5 different Blenschutz categories. Category 0 offers only very light glare protection for the evening (tinting 3 to 20%), while Category 4 with its 92 to 97 percent tinting is best suited for alpine and water sports. However, Category 4 sunglasses must not be worn while driving.