daianna's blog

Wearing sunglasses can help people effectively protect their eyes in scorching summer. Which color is best for your health, yellow sunglasses, black sunglasses or others? An American ophthalmologist reminded that it’s better for people to choose yellow sunglasses for avoiding certain eye disease.

Janet Sparrow, a professor of ophthalmology in University of Columbia in America, is researching whether contacting with the blue-ray in sunlight is one of the causes of age-related macular degeneration which is the main reason of causing the olds blind. Sparrow said that some light-sensitive compounds in the retinal cells gather more and more as people getting older. And the blue-light can activate these compounds, thus promotes the release of harmful free radicals which likes oxidation process harming to retinal cells. However, yellow lens can filter harmful blue light, thus reduce the amount of blue light into the eyes. So, Sparrow advise that wearing yellow sunglasses is a better choice if people don’t know which color to choose.

Since the yellow sunglasses are good to our eye health, then let’s learn more about it. Here is a part of the prescriptions of yellow sunglasses. Strictly defined, yellow lens can enhance contrast ratio and provide more accurate optical image. Thus yellow sunglasses are also called night vision goggles. According to this property, many people wear yellow sunglasses for driving as well as some just wear them for decoration. Anyway, it is good to our eye-health.

Since it is fashionable and convenient to shop online, how to shop online for yellow sunglasses? Ok, here are some tips. First, confirm the reputation of the seller online and make sure that he seller sells goods of good quality. Second, check the related mark on the yellow sunglasses and see whether it has the ability of protecting from ultraviolet rays. Hope you buy the good yellow sunglasses!

Article From：

http://www.cheapeyeglassesblog.com/1548.html