i like wearing glasses u can look all over table and no one knows who ur even studying
if youre that worried about giving away tells with your eyes,. the chances are the rest of your body is already screaming out tells
problem solved .....shovel up and squeal!
When you look at the lighting in some poker rooms, having sunglasses on isn't necessarily a sign of a person trying to hide tells (although it usually is). They could also have a sensitivity to the type of lighting that is used in the room. I know I do.