So, in the 2000 movie Pitch Black, Shane, played by Vin Diesel, says he got his eyeshine from some shady surgery while he was locked up. This kid Jack, who totally looks up to him, asks how to get eyes like that, and Shane's like, "You find a doctor and pay him 20 menthol Kools to do a surgical shine job on your eyeballs." It's basically this rough, prison-style operation where some doc—maybe a quack or just another inmate with some skills—fixes his eyes for a pack of smokes, making them reflect light like an animal's so he can see in the dark.The bounty hunter Johns backs this up, calling it a "surgical shine job" from a max-security prison to help Shane get around in those pitch-black cells. It paints the whole thing as this tough, intentional mod Shane went for just to survive being behind bars.Some promo materials and prequel stuff build on it too: While he's at the Ursa Luna Penal Facility, or "Slam City," Shane runs into these "shiners"—guys with tricked-out night vision—who tease him for being a "darkeye." To get an advantage for breaking out, he pays a vet who works on cows, not people, with some stolen Kools to do the job. It sounds brutal: cutting the cornea, drilling into the eye, shooting in some reflective stuff behind the retina, all with no painkillers. Survival odds are crazy low—like 0.2% make it through, and only 0.005% get their sight back—and then Shane swipes some welder's goggles to deal with how sensitive it makes him to light.