Good sunglasses protect against glare, but should also filter UV rays as much as possible. Make sure glasses are big enough. If this is not the case, your eyes are not protected against direct or indirect radiation.
It is obvious that you wear your sunglasses more in summer than in winter. But do not be surprised by the cloudy days. In fact, 50% of UV rays pass through the cloud cover.
Sunglasses with or without UV protection
There are sunglasses with simple tinted lenses without UV protection. These do not sufficiently protect your eyes. On the contrary ! In the shadow of the glasses, the pupils dilate and let more dangerous rays penetrate to the retina. The rays can cause painful inflammation of the connective tissue with consequent permanent damage to the cornea.
Sunglasses with UV protection are therefore necessary. If it is registered UV-400 on the glasses, you are sure that your sunglasses largely mask the harmful rays.
No worries with European standards
European standards define the quality of the filter. Therefore, only buy sunglasses with the CE mark, followed by a number from 0 to 4. This number represents the intensity of the color of the lenses or the protection against glare.
There are five protection categories from 0 (up to 20% light absorption) to 4 (92-97% light absorption).
0 – On cloudy days in town or indoors. Does not offer any protection.
1 – By veiled sky with moderate light.
2 – In good weather.
3 – If the light is intense, at sea or in the mountains.
4 – In case of extremely intense light as in high mountains. Not suitable for drivers.
The color of glasses
The color of glasses glasses does not say anything about protection; “Dark” does not mean that you are automatically better protected. The only thing color does is reduce visible light and protect your eyes from light.
The gray glasses diminish the violence of the light without taking anything away from the colors.
The brown lenses make the sunlight less blinding but deform more colors and make the view a little blurry.
The yellow glasses reduce the veil of the blue light of the sun better than the brown ones, so they reinforce the view but deform more the colors.
Green lenses reduce glare and filter out some of the blue light. They allow a good contrast between the objects.
The pink glasses offer a good contrast for objects on a blue or green background. This is ideal if you practice a lot of water sports or if you are often on or around the water.
The most used colors at Sunglasshutusa are gray, brown and max brown.
Each color is characterized by specific properties. Gray maintains spatial colors. Brown brings more contrast to certain colors. The max brown is par excellence the glass for the motorists. It allows a clearer vision and rich in contrasts. In addition, this color also removes troublesome chips, for example those of headlights oncoming cars.
The size of glasses
The lenses must be large enough to protect your eyes from incident solar radiation, which penetrates from above, from the sides or through reverberation, from below. This is certainly valid for holidays at sea or in the mountains. The ideal sunglasses reach up the eyebrows and down, the edge of the face.
For all outdoor sports (tennis, skiing, golf, jogging), there are adapted sports glasses. In the mountains, you obviously need other glasses than to practice water sports. Snow and white sand reflect more than 90% of the sun’s rays and are therefore very dangerous for the eyes.
When playing sports, avoid metal-frame sunglasses, which are fragile. Polycarbonate or plastic are more ‘sports materials’. There are also frames that completely enclose the eyes, especially on the sides. They offer optimal protection. Tip: An elastic headband at the back of your head keeps you from losing your sunglasses during the sport.
Photochromic lenses, which adapt their hue to light and thus prevent blindness, are not suitable for the sea or the mountains.