This is a common sense, some light, almost everyone likes in the sun's
ultraviolet (UV) is harmful to the skin, but the fact is, these rays of our
health risks, they also pose a threat to our eyes, though the sun is more than
93000000 miles away. What is the reason, why do people often go out for a long
period of wearing dark glasses to protect.
But there is always a mass of
misunderstanding, eyes can only damage on a sunny day. The fact is, although the
outside is cloudless, the sun hung in the sky, but behind the clouds, it also
produces ultraviolet UVA and UVB ray form. This is why some people are the sun
burned wonder, why, because they do not have a cloudless day laying on the
beach.
In addition, damage to the eyes from other things as well, such as
glare and reflection, especially when you're around the water, sand, and even
snow.
Therefore, suggest that you wear sunglasses, daytime outdoor. However,
some people may ask, how to protect our eyes, sunglasses.
The reason is that
the lens coating and application. Sunglasses were dyed various colors, each
color tone function for certain types of light. UVB ray tone or coating is
particularly effective, this is our eyes is the most dangerous rays. The use of
coating, UVB ray is difficult to pass through the lens. In addition to paint,
sunglasses lenses specially designated greatly contribute to the prevention of
harmful rays and. This is why we usually wear normal lens does not have the
function to protect the harmful rays.
In addition, the design of sunglasses
lens, with antireflection coating, in order to reduce glare and reflection from
the water and snow, etc.. To prevent glare and reflection to bring a great
benefit, engaged in water and ice snow sport you just drive and play.
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