Black Eyed Peas rapper APL.DE.AP is suffering from a rare genetic eye disorder that's made him legally blind.
This Filipino hip-hop star, real name Allan Pineda Lindo, has revealed he has constant blurry vision and severe nearsightedness as a result of nystagmus, which makes his eyeballs vibrate involuntarily.
His vision is so poor that even with optimal contact lenses, he is legally blind. He is also colourblind.
He tells People magazine, "I'm good at shapes. If I'm not close, even if it's big, I can't read it."
But Apl admits secretly suffering from the condition as a child sparked his interest in hip-hop, and ultimately, his chart-smashing music career.
He adds, "Until I discovered hip-hop, I felt I wasn't going to accomplish anything. When I dance, I picture myself and the floor in my head...
"I doubted myself for a long time... I'm comfortable not using my vision. I weave around my problems."