[House wonders, briefly, who she conned to get the sulfur. Watson hadn't been buying it. Epps? Probably Epps. He puts on a grave expression and tone, looking and sounding entirely serious for a moment.]

Your eyes are... crap. You know the risks with saltpeter, but if you're already that far gone. [He rubs a thumb across his brow, looking genuinely worried.] Yeah. [A heavy sigh.] I'll put in a prescription for you, kid. Hang in there.