I started transitioning to the red dot when my vision started getting worse with age (63). It got to the point where I could no longer see details in the target and just saw a brown blur. I transitioned to red dot and it helped a lot. I trained with the tape over the red dot’s glass but still was seeing the targets the same, but accuracy was much better.
I went to see an Ophthalmologist and was diagnosed with cataracts in both eyes. I had cataract surgery and my vision returned back to normal. 20/20 in left eye and 20/15 in the right.
I started dry firing with irons, took videos of myself shooting red dot vs irons and found myself shooting better and faster with irons.
Us seniors/super seniors are at the age that we start to develop cataracts and maybe that will be the solution. Not saying that it applies to everyone but just a thought.
Hope this helps.