I've some loss of hearing, so have been using hearing aids for about a year. I don't wear them all the time, mostly when going out or watching movies. By themselves they are a marvel, small enough to fit inside the ear. The inside the ear bit is complicated--a tube, a little jobbie which fits into the tube but can be replaced when it gets clogged with earwax, and a rubber/plastic shield which fits over the jobbie which seems also to protect against earwas.
Anyhow I've used the aids often enough that I've had to replace the shield and the jobbie a couple times. But two weeks ago a confluence of errors,including failing to test that the shield was securely attached, meant that the shield came off and was stuck way inside my ear. Uncomfortable.
Anyhow after some days in denial, I went to the doctors. My internist wasn't able to reach it, so I got a referral to an EMT specialist. He had this machine connected to a TV screen so when he inserted his implement into my ear both he and eye could see the shield inside the ear canal. No sooner had I realized what I was seeing than he'd grabbed the shield with the implement and removed it. Total elapsed time < 1 minute.
I don't know how economists account for such improvements in productivity.