U2’s Bono Finally Reveals Why He Is Always Wearing Sunglasses! [VIDEO]

During a recent taping of "The Graham Norton Show", U2's Bono was asked if he EVER took his sunglasses off. His response? "This is a good place to explain to people that I've had glaucoma for the last 20 years."

Check out the video here of some of the interview and his explanation here: