I have Progressive tri-focals. The problem they can cause for a head injured person is the need to constantly raise and lower the head. This can cause the inflammation to upper neck injuries. Sometimes, I will lift my glasses up to use the bottom of the lens rather than tilt my head. It can be much better. I have some reading glasses too, without the progressive lens grind. They work at my desk computer.

I found that I needed to put my desk monitor as low as possible. Bi and Tri-focal lenses are normally ground for driving as the primary use. This means the middle distance lens is set for looking at the dashboard instruments. Computer monitors are rarely below eye height. The need to tilt the head to see the high monitor can be a strain on the neck.

Glad you found a good system. I need new glasses but the current styles of frames have such small lenses I have hesitated to get new ones. Maybe a cheap pair of near and another of distance would work. I may check out your suggestion.