During the pre-cataract-op physical exam, they found a previously undiagnosed
Atrial Flutter but said to go, ahead with the cataract surgery and get the AF attended to later. Dunno if the AF caused the
bradycardia (slow heartbeat), but it was decided (without much input from me) to toss me into an ambulance for a 2 block ride to the main (University of Michigan) hospital where I was shoehorned into a lot of people's schedules for pre-op testing and catheterization/ablation where the doc sent in a probe with sensors, camera, and a tiny RF transmitter (like a mini-microwave oven). The doc looked things over, checked where the nerve impulses were travelling or not, and burned away a few errant pathways until my heart was beating properly to his satisfaction. I was asymptomatic for the entire time; I felt nothing unusual.
Anyway, between that and all the followup doctoring, and the medications they wanted me on, I didn't get back to get my left eye worked on until Thursday.