Sunglasses are composed of dyed lens. We want users to have a correct understanding of it. Maybe you just want to use sun glasses to reduce the strong sunlight, but you know that in addition to block the light, you also need other protection of us?

Sun light in the eyes visible only a small part. In high school physics class, we know, small wavelength radiation from the gamma ray, X-ray, ultraviolet, visible and infrared light, then that is a wide range of long-form radio waves. Visible light is a clever way for the human eye can receive, so that humans can successfully reflected by the surface of objects such as visible light and see: trees, rocks, animals.

Others will come from the sun’s rays could harm our physiology. The decisive factor is anything that would cause harm to human radiation must be absorbed by the body will hurt. No absorption, it will not hurt. For example, radio waves can penetrate our body, will not be absorbed by the body because, it will not cause any significant harm. On the other hand, X-ray will be absorbed in some organizations, it is a dangerous and must be lead and absorb them as protection.

There are two kinds of rays under normal exposure may cause some eye problems, which are ultraviolet (UV) and infrared (IR). Two rays are not visible until you feel some slight burning eyes, skin, the infrared can feel the presence. The same sense we also have to wait until UV cause some damage when its only identify, such as: tanning or sunburn. Both in physiological damage caused by different ray, ultraviolet (UV) damage will be accumulated; and infrared (IR) is not.

Let us test these light caused by the will that hurt your eyes. Ultraviolet (UV) was largely absorbed by the cornea, some will be absorbed by the lens, but some will arrive at the retina. Thus, according to the rules: absorption = impact, any major consequences will appear in the cornea, and then is the lens, cornea surface can cause injury, the situation will be more than the other severe sunburn. This phenomenon is sometimes seen in a long time in reading under fluorescent lights, and will ignore the ultraviolet reflection into the eye through the paper, causing a very painful experience.

Under prolonged exposure to UV can cause the development of a cataract lens phenomenon. Infrared light (heat) was partly absorbed by the cornea. By lens absorption, but some will reach the retina. There is evidence that the infrared will burn in the retina of the organization. This situation is like watching the eclipse of the sun. When the intense visible light was when a large number of infrared will enter the eye and focus on the retina. Depending on the length and luminosity may be, such a situation could lead to retina damage, resulting in permanent vision loss.

Before the sunglasses for you to view, may think it is a popular product. But if you intend to spend the beach one day, one thing is you have to pay attention: the strong sunshine coast. For example, if you do not have some protection for the light, will result in the light-sensitive retinal pigment pale, way, your night vision may become very poor. This phenomenon is particularly an older person must be noted that even more must be done for protection, because the ability to restore visual sensitivity to light about the age of 40 started to decrease thereafter.

Popularity: unranked [?]

Tags: brief analysis, Eye Protection, Sunglasses, sunglasses function, ultraviolet, X-ray

This entry was posted on May 5, 2010 at 1:03 am. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Posted in Sunglasses by admin 9 Comments