Why the sunglasses ...?

Sunglasses are not only a fashion . It can also damage the eyes permanently protected .

Why the sunglasses ...?
     Sunglasses are not only a fashion , it also can be protected permanently damage your eyes .
The aging of the eyes and cataracts , pterygium and destroy the retina.
Light damage to the eye .
     All eyes absorb light energy as heat or light to the process . Chemical reactions in eye tissue.
These reactions can cause permanent damage solar light consists of multiple types of damage to the eye.
    The price of the glasses , it does not always have the ability to block UV rays, sunglasses should always
advisable to buy from a company that is accredited . That can block both UV-A radiation and UV-B is another pair
of glasses with a glass of great help protect the eyes from the sun as well as from the top and sides , which should
have the glasses to bend and there . This will protect the temples close by the side of the eye.
How to choose sunglasses
     Sunglasses will light your eyes feel more comfortable. And protect the eyes from harmful The sun was Buying Sunglasses
We should look at the label directed glasses that can protect against UVA and UVB rays or ultra- violet because the
two species are different . UVB is absorbed , it destroys the eye cornea If the glare for too long . Probably through the screen
to the UVA will penetrate deeper . Therefore, the quality is like sunglasses, sunscreen good for the eyes .
    Organization Food and Drug Administration set a standard that sunglasses can protect at least 95 percent of UVA and UVB 99 percent .
      If you are in an environment that is very bright as climbers should choose lenses can reduce the light intensity as high as 97 percent .
      For general use , such as walking along the beach or driving. Choose a Lens Tint is 70-90 percent is considered sufficient.
Type of lens
Sunglasses with lenses of different types to meet different needs .
• Tints common To cut the amount of light of all colors equally . Suitable for general outdoor use
• Polalized lens Features anti- reflective lenses . Not cause blurred vision It also lets light into the eye ,
too . Ideal for driving and outdoor sports activities or in the water or working in bright sunshine should choose sunglasses kind Oplalaids .
• Photochromic Lenses Lenses will change color according to the intensity of light when outdoors to light when indoors , fiercely .
For people who work both indoors and outdoors. If you ran outdoors with a lens with a little dark .