UVB rays of the sun glasses

As a doctor of Department of Ophthalmology, has the characteristics of what features are the most important, I think that in choosing sunglasses? Sunglasses are essential parts, we should have one or two. You can get the sunglasses almost everywhere, from the dollar store Neiman Marcus, but the real question is what are the characteristics, in the protection of the health of your eyes?
1. 100% UV, any pair of sunglasses is the most important feature of. Ideally, they should stop the UVA and UVB, because the light will lead to many different diseases, including cataract, macular degeneration, and pterygiums, just to name a few. Find the marked "UV 400" stop all the light of wavelength 400 nm, it covers all of the UVA and UVB rays of the sun glasses.
2. Polarized lenses reduce glare from the surface like water, glass and snow. They are excellent standard colored Sunglasses driving, some sports, because they allow the wearer to see more clearly polarized lenses to selectively block glare, which not only keeps the environment light.
3. Polycarbonate lens is an ideal plastic lens, either colored or not. They are comminuted, because they are from the compressed plastic pipe. They are the pipes broken after rolling, the effect of each other, rather than collapse as traditional glass or plastic. Therefore, the most secure sunglasses, see polycarbonate.
The invention of Dr. Eva SWIH bottle carrier beam is who. When the temperature rises near the end of spring and early summer (namely the nineteen ninties high), I'll bring the chilled a bottle of water, and when I go to skate, but I find that, I always want to in my neck, I calm down and put the bottle.