During 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.