[They can't quite tell what this nice stranger is doing for them, but when the stickiness disappears from their hands they hold them up in wonder.]

You have an incredible grasp on your Nature. Thank you. That was very kind.

[Order, maybe? Order seems like an apt description of their apparent savior, a strong guess at the person's Nature.]

I can't say what happened to my eyes. It was blurry for a second, and then...

[They rub at an eye a little, blinking forward, trying in vain to restore their sight. Nothing seems to bring back even a little of their vision.]

What causes blindness? I'm unfamiliar with medicine.