Sunglasses lens is constituted by the dyeing. We want the user to have a correct understanding of it. Maybe you just want to use cheap oakleys sunglasses to reduce the strong sunlight, but do you know that apart from denial of light, you also need to protect our other what?
The sun's rays in the eyes visible only a small part. In high school physics class, we know, by the wavelength of the radiation tiny gamma rays, x-rays, ultraviolet, visible and infrared, then that is a very wide range of long radio waves components. Visible light is very clever to let 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 from the sun's rays would harm our physiology. The decisive factor is that anything that would cause harm to human radiation must be absorbed by the body will cause harm. No absorption, it will not cause harm. For example, the radio waves can penetrate our body, because the body will not be absorbed, and therefore will not cause any significant damage. On the other hand, x-rays will be absorbed in some organizations, it is dangerous, and it must lead as protection and absorb them.
There are two rays, we normally exposed on the eye may cause some problems, which are ultraviolet and infrared. Two kinds of rays are not visible until you feel some slight burning eyes, skin, only to be able to feel the presence of the infrared. Ultraviolet same feeling we have to wait until its cause some harm would have found, such as: skin tanning or sunburn. Both in physiological damage caused by different rays, ultraviolet damage will be accumulated; while the infrared is not.
Let us examine these rays are those that will cause damage to your eyes. Ultraviolet (uv) mostly absorbed by the cornea, fake oakleys lens part will be absorbed, but some will reach the retina. (Some studies indicate macular degeneration and absorption of ultraviolet light on). Thus, according to the rules: absorption = effect any major complications will appear on the cornea, and then the lens, can cause damage to the surface of the cornea, the situation will be more than any other severe sunburn. This phenomenon is sometimes seen in a long time reading under fluorescent and UV will be ignored by the paper reflected into the eye, causing a very painful experience.
Under prolonged exposure to ultraviolet light will result in the development of a cataract lens phenomenon. Infrared light (heat) is absorbed by the cornea part. By crystal absorbed, but some will reach the retina. There is evidence that the infrared will burn the retina tissue. This situation is like watching an eclipse of the sun. When visible light is intense, when a large number of infrared continue into the eyes and focus on the retina. Depending on the length of time depending on the luminosity, this situation may cause sunburn retina, resulting in permanent loss of vision.
Before your views for cheap oakley sunglasses , may think it is a popular product. But if you spend the day going to the beach, there is one thing you should be aware of: the sea strong sunlight. For example, if you do not have to make some for glare protection, will result in the photosensitive retinal pigment fades, this way, your night vision may become poor. This phenomenon is especially older people must be noted that even more must be done to protect, because the ability to restore visual sensitivity to light about the age of 40 will begin to decrease.
