I use Canon R series cameras in my portrait studio, and a few of our team members have been suffering from failing eyesight. One solution we are looking at is to add a small external monitor to our setup, we've had to help is to link a small preview...
I've worked with that too, thanks for the suggestion. It is a good option; I've also worked with a CamRanger2 and that's a remarkable tool, they are good options but the wireless connections aren't always reliable and require a lot of battery power....