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robin668 Offline



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08.05.2014 05:57
Sunglasses feature antworten

Sunglasses are posed by the stained Fake oakleys frogskins sunglasses cheap for sale lenses. We want users to it to have a correct understanding. Maybe you're using sunglasses just want to use to reduce the strong sunlight, but did you know that in addition to denial of light, you also need other protective us?

The sun's rays in the eyes visible only a small part. In high school physics class when we know that the radiation from the tiny wavelength gamma rays, X-rays, ultraviolet, visible and infrared light, then that is a very wide range of long radio waves components. Visible very cleverly so that the human eye can receive, so that humans can successfully reflect visible light through the surface of the object and see such as : trees, rocks, animals and so on.

Others will come from the sun's rays in our physiology harm. The factors that can cause any harm to the human radiation must be absorbed by the body will cause injury. No absorption, it will not cause harm. For example, the radio waves can penetrate our body, as will not be absorbed by the body and therefore does not cause any significant harm. On the other hand, X-rays will be absorbed in some organizations, it is dangerous, so must Cheap Tiffany and Co Necklace Jewelry Outlet lead as protection and absorb them.

There are two kinds of rays, our normal exposure may cause some eye problems under it, they are the ultraviolet (UV) and infrared (IR). Two rays are not visible until you feel some slight burning eyes skin to be able to feel the presence of infrared light. For the same time we have to wait until the ultraviolet feeling will find its cause some damage, such as: tanning or sunburn. On two different physiological damage caused by radiation, ultraviolet (UV) damage will be accumulated ; and infrared (IR) is not.

Let us examine these rays are those that would cause harm to your eyes. Ultraviolet (UV) absorbing most of the cornea, the lens portion will be absorbed, but some will reach the retina. (Some studies indicate that macular degeneration and absorbed UV-related). Thus, according to the rule: absorption = influence, any major sequelae occur in the cornea, and then the lens, can cause damage to the corneal surface, the situation will be more serious than others sunburn. This phenomenon is sometimes seen in a long time reading under fluorescent lights, and will ignore the UV entering the eye through the reflection of the paper, resulting in a very painful experience.

Will result in the development of a cataract lens phenomenon under prolonged exposure to ultraviolet light. Infrared light (heat) is partially absorbed by the cornea. Absorbed by the Fake Oakleys Gascan Sunglasses Cheap for Sale lens, but some will reach the retina. There is evidence that infrared will burn tissue on the retina. This situation is like watching an eclipse of the sun. When visible light is strong, a large number of infrared will enter the eye and focus on the retina. Depending on the length of time and luminosity may be, this situation may cause sunburn retina, resulting in permanent loss of vision.

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