Sunglasses Could Protect Your Eye Sight
Everyone needs to keep their eyes protected from unsafe sunrays by using sunglasses. The glasses that are advised by opticians are ones that protect against UVB, HEV and UVA rays. You will be saving yourself from getting cancer around your eyes and cataracts.
Dark glasses are not only for fashion. They are not made to keep you from squinting when you drive or when you are outside. Glasses with lenses that block the sun from your eyes are made for your protection.
Exposing unprotected eyes to excessive amounts of ultraviolet rays over a short amount of time can cause photokeratiis, or sunburn in the eyes. This can be painful, and give you the feeling of having sand in your eyes. This is usually only temporary and hardly ever causes permanent damage to the eyes. However, long term exposure to this can be more serious. Which is why people need to be made aware of why they need to wear glasses that shade the eyes.
Studies have proved that long-term exposure to UVA will lead to cataracts and damage to the retina. UVB rays do not have as much energy as UVA ones do, but if overexposure can give you skin cancer in the eye area. Being exposed to UVB rays for a shorter length of time will cause the corneas to become inflamed. This has the effect of short term blindness lasting over twenty four hours.
Eighty percent of exposure to the sun occurs when people are younger than age 18. Children are known to spend more time outside than adults. This is why it is very important to protect their eyes as well as your own. Glasses that block out at least ninety nine percent of harmful rays are recommended.
It does not matter if your lenses are plastic or glass. Both can be good for shading you from harmful rays. Make sure whatever ones you do buy have a UV absorption of 400nm. This means they will block one hundred percent of damaging rays.
The light that bounces off pavement or other smooth surfaces like water is called glare. Polarized lenses will cut down on glare but do little to protect your eyes. UV protection can be combined with polarized lenses so that you get both glare reduction and protection.
UV protection is not based on the color of the lens in your glasses. It will not matter if your lenses are dark or a light colored brown. Color only matters for blocking out HEV radiation. HEV is also known as blue light or high-energy visible radiation.
{Ultraviolet light rays do have more energy than HEV rays, but HEV radiation will go deeper into the eyes and have damaging effects on your retinas. A reddish brown, bronze or copper lens is best for protection from these rays. The label on these glasses might say blue blocking. You can find glasses that will protect you from all of the harmful rays.High-energy visible light does have lower energy than ultraviolet light but the rays penetrate deeply into the eye and can cause retinal damage. For glasses that protect against damage from HEV light, a bronze, copper or reddish brown color is best. These would be called blue blocking lenses. It is possible to get all of the protection you need in one lens.
It is easy to understand why good sport sunglasses are important for everyone. Everyone may not need Hugo Boss sunglasses but everyone does need to protect their eyes.
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