What is a lens
We have seen from the born a lot of people who wear glasses, when I was a child don't understand why some adults and children have to wear glasses, the glasses have what effect, when he had grown up, I see, that's because their eyes have a disability, some people are born, some people is caused by long-term strength is not clear, but some people just to look good, such as sunglasses and a pair of glasses it have what function all depends on the lens, then what is the lens, some people in the eye industry for many years don't understand the lens？
The lens is our second pair of eyes, when our first pair of eyes are not working well, we can match a pair of glasses according to our own degree so that we can see the world clearly again
In summer, when you go out, the sun is very strong. You can try sunglasses with solar lenses, which can protect your eyes from bright light.It can also be worn with clothing. Sometimes a plain outfit can look great when paired with sunglasses or plain lenses.
