But just wonder lot of Pros don't use it, Negreanu, Ivey, Brunson, etc.
there are no do's and don'ts really. If you wanna use glasses theres no rules against it, plenty of players have won
wsop events wearing them. It makes close to no differance really.
but yes, it's mainly for the bright lights in some
casinos. I remember playing a live event and we played for around 9 hours the first day, the lights were that bright that i had headaches all night, i played the next day without glasses, but if i had a pair i would have worn them off and on to help with glare. Other casinos will not be as well lit, but alot of them are. I think people would build up a resistance to them if they played a ton in casinos Ex. Phil ivey. so that would explain why they don't do it.
As far as concealing tells i really don't think it does anything at all unless a fish is being obvious with where he is looking during a hand or something.