Sid Schwab talks about anesthesiologist experiences

On why there is a screen separating the surgeon and anesthesiologist:

. . . the screen (still referred to as the “ether screen” is a barrier between the sterile field of the operating table and the unsterile area the anesthesiologist works in. Occasionally it’s used like a net on a tennis court: some surgeons like to toss things up there, knowing the anesthesiologist can’t return serve.