"Sorry to be a nit picker but at <a href=""https://www.youtube.com/watch?v=8Gk7EvCQGoo&amp;t=1m02s"">1:02</a> there’s a piece of dust floating around in front of the lights. This may not seem too big of a deal however it means this surgery", wether a test or not, is not aseptic and could be detrimental to the patient.