How to tell if a pair of sunglasses is really good?

[McClellanville]

I was wondering how do I find out whether a pair of sunglasses is really good, and whether it protects those UVA, UVB, etc ...?Everyone talks to buy optical known, but the question is this, is even buying from a viewpoint known as to whether he is really good and will protect my eyes??As I test it??in the laboratory? which lab?

[McCloud]

Well, from what you said, I can see that you are concerned about what kind of sunglasses is good for your eyes right? So,anyway, sometimes it's no use asking so many questions, and it makes more sense to take an eye exam to see what type of sunglasses are suitable for you. Afterwards, when you decide to get a pair of sunglasses, you could consult the salespeople about its functions and what kind of people could wear them. Generally speaking, it depends on your needs.