Dave J Hogan/Getty ImagesDuring a recent appearance on The Graham Norton Show, Bono revealed that he was diagnosed with glaucoma more than two decades ago.
"This is a good place to explain to people that I've had glaucoma for the last 20 years," he shared on the late-night program.
The U2 frontman has been known for wearing blue sunglasses throughout much of his career, and now it seems that he found the perfect outlet to divulge the real reason behind his signature accessory.
The host asked if he ever takes his shades off, and Bono cracked a joke at himself and pretending to not be able to see Norton at all.
"No, but seriously, Graham, you don't understand how this has messed with my life," he said while laughing.
But in all seriousness, Bono admitted that he thought he would be the last person to deal with the condition, given that he had such perfect eyesight growing up.
"The thing about glaucoma is that I had perfect 20/20 vision," he explained.
"So I would go to do these eye tests and I would say, 'But I don't really need one because I got perfect vision and I can read the bottom line.' And they would go, 'Oh…have you ever had sort of strange visions of steam coming into the room and rings around lights?' And I went, 'Oh, yeah, and it's not from anything exotic.'"
And when asked whether or not he has "drawers" filled with blue-tinted sunglasses, he dished that most people just offer them to him willy-nilly.
So there you have it!