In hot summer days, in order to prevent eyes from burning from the sunlight, sunglasses of various colors come to the preferences of many people. Pink sunglasses present the wearers a cute look; green sunglasses enhance one’s mystery; blue sunglasses appear to be rather cool. However, recently, Reuters reports that American eye doctors suggest customers not to buy sunglasses of blue lenses, for they probably bring harm to eyes and may be unsafe for us.
Professor White from Columbus states that no matter the young or the old are not advised to wear blue sunglasses. It is researched that macular degeneration would be caused by wearing sunglasses of blue lenses too often. The denaturation is one of the main reasons that contribute to the blindness of elders. Professor White states that with one getting older, there will be more and more light-sensitive compound produced in retinal cells. And the blue light could activate those compound to the most extent. As a result, free radicals would be released, which would do harm to eyes as the oxidation of retinal cells.
Professor Smith from Oxford University also emphasizes that blue sunglasses are no good for eye health. He explains that it seems that most light we see from sunlight is white, however, there contains light of many different colors, as many as those in a rainbow. Among them the blue light is of rather short wave, and eyes get the smallest vision in blue light; on the other hand, blue light functions similarly to purple light, which is also pretty unhealthy for eyes, and even would damage eyes. Many clinical researches reveal that many diseases of peripheral nervel are relative to blue light. Professor Smith also urge eyeglass wearers that besides blue sunglasses, many contact lenses with blue lines endanger eye health as well.
Therefore, eyeglass wearers should not buy blue sunglasses, especially sport lovers, because they have to be exposed to kinds of harmful rays from sunlight for too long time. The right choice should be sunglasses of yellow lenses, which are supposed to filter the blue light effectively. Additionally, dark lens sunglasses are recommendable, for they are able to reduce all colorful lights to the minimised degree. In hot summer days when everyone wants to show their personalities and beauties, he/she ought to be aware of eye health maintenance.
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