If the sun does not hurt my eyes, do I need to wear sunglasses?
Yes! The sun’s UV rays can cause a lot of damage, some of which will be irreversible. Depending on the degree of brightness of your environment, you must protect yourself with a minimal index.
What exactly are UV rays?
Ultraviolet (UV) rays are located just after the purple portion of the visible light spectrum, with sunlight being the main source. UV light is divided into three different types: UVA, UVB and UVC.
– UVA rays have a longer wavelength and pass easily through the sunglass, experts – do not agree on whether they cause damage to the eyes or not.
– UVB rays are the most dangerous, they do not pass through the glass, they make sunscreen and sunglasses indispensable.
– UVC rays do not reach the Earth because they are blocked by the atmosphere.
What effects do UV rays have on my eyes?
Even when the sky is cloudy, UV rays are dangerous. To know what is the level of the UV index, check weather USA.
Can some medical problems increase the risk of UV damage?
Yes, especially for people with cataracts or who have retinal dystrophies should be extremely careful.
What are the solutions to avoid damaging my eyes?
You must wear sunglasses to avoid damaging your eyes, choose glasses that protect you from 99% to 100% of UVA and UVB rays. The glasses labeled “UV 400 sunglasses “, block all light rays wavelength of 400 nanometers, which covers all UVA and UV rays. In addition, it is important that the glasses are covering to prevent harmful rays from entering the frame.
What is the best color for sunglasses?
The color of sunglasses is a personal choice and does not impact on protection. However, the most effective shades are brown, gray, green because they improve the perception of contrasts and reliefs.
Gray is recommended for cycling, walking, golf; green reduces visual fatigue when the light is too intense. Brown is a good choice for skiing or sailing Learn more about ski goggles. Yellow is more suited to cloudy weather and is useful for precision sports like archery because they work well in low light and increases the contrast.
Do I still need these “UV protection” if my sunglasses are dark?
Yes, many people think that it is dark glasses that protect the most, but in reality, this has no effect on UV rays. For proper protection, you must buy standard sunglasses that indicate blocking 100% of the sun’s UV rays.
The most expensive sunglasses are they of better quality?
Not necessarily, although the quality of the sunglasses usually involves a high cost, you can also get a good pair for less than 40 euros, just make sure to check that the glasses provide adequate protection against UV rays.
Do children need sunglasses?
Children are particularly at risk because their eyes are more sensitive than adults. Parents need to be aware of the need to protect the eyes of their children.
I already wear glasses, what are the possibilities to wear sunglasses?
You can buy sunglasses or glasses with photochromic lenses (which change from light to dark depending on the brightness).
Clip-on is a cheap option and can be purchased at the same time as your glasses. Some frames also include sunglasses that attach magnetically to the frame, it also offers the advantage of less scratch the glasses of your glasses.
Is the choice of the glass protection index related to the color of the eyes?
The clearer the eyes, the more fragile they are. However, a high protection index is primarily a function of activities. For the mountain, an index of 4 is essential but it is dangerous for driving because we might not see anything by going under a tunnel.