[Spock had to refrain for sighing as he gingerly grabbed the man's hand, and held it aloft. With his other hand, Spock grabbed a pair of tweezers and started to methodically pick glass out of Walter's hand.]

I am having difficulty imagining when it would be a necessary occurrence, however I am pleased to know that you do not do it often.

While I tend to your hand, perhaps you could tell me what tests you would like to run in my lab? [Spock would have to get other supplies depending on what Walter wanted to do.]