Finn assumes that the tense waves that seem to pass over Blue is a sign of the pain. He doesn't ask about it again. His movements slow, become gentler, but he works at a steady pace in order to get done quickly. However-

"What do you mean, more than your eyes?" Finn's brow furrows in curiosity but no fear or wariness. It's intriguing, actually. And he understands how people can be sensed. But he's never confused that strange ability with his own sight before.