I have just re-done my Scout/Dynavector XX2MKII with my 62 year old eyes. I use a combination of the 4x lighted glass, or a 10x loupe with all the lighting I can muster in the room, plus a mini Maglite to shine directly where needed. For some views, the 4x works better, for others, the 10x does the job. Whatever helps me to see what I need to at the time is what I use. If one won't do it, I reach for the other one. On the 10x loupe, I remove the plastic extension from the bottom, so I can get closer with the lens. Not easy on us old guys, but it sure is worth it!
Best of luck,
Dan
Best of luck,
Dan