[...John....John you're a nurse though...John wait....

Well maybe he's a certain kind of nurse! Maybe he hasn't learned about this. He at least knew it was something medicine related.]

Ah, amelanosis is another name for albinism. It refers to the complete lack of pigments called melanins found in the body. When there are no melanins to color the skin or hair, it causes them to appear white. It also affects the eyes. Because there is no pigment in the irises, they are essentially clear, allowing you to see the blood vessels behind them. Hence why albinos typically have red or pink eyes. Just as with the skin, their eyes are very sensitive.