[Well John certainly doesn't look bored or anything through that entire, very technical explanation. He looks more politely interested than anything.]

It's okay! You don't have to apologize. I don't mind at all! I...kind of don't understand some of the stuff you're saying because I'm not...you know, like a doctor or anything but it's interesting!

I have heard that albinism doesn't always result in red or pink eyes, though. That's less common in humans, right? Usually we wind up with light blue or grey while animals end up with pink or red, yeah? Or do I have that wrong.

[He has a friend with red eyes who is not albino, okay he knows some things even though he's not actually a doctor.]