I've been around the block.
The good news is that if you do the same exact surgery all the time, eventually it will become easy. You prepare the drugs for all the patients at the same time at the beginning of the day, right? Also, when I did phacos, we used 2 different O.R. suites and 2 teams. The surgeon went back and forth to each room and knocked out the cases. This gave the staff more time to get each patient ready.