I see pretty well close up, I guess you call that near sighted.
I used to be able to read the micro printing on $100 bills, but not past 40, I can see it, I can't read it.
I have astigmatism also, always suffered with it. I was one of those goofy looking guys with the headband & monocular on the firing line...
Don't know what you call it, not an eye doctor. No MD or DO behind my name.
I did notice the glacier glasses we wore to stop snow blindness had a bunch of pinholes in sheet metal for lenses and I often didn't need my rather strong glasses when I was in my 20s.
Couldn't see long distance, but it cleared up 50-75 yards in front of me pretty well.
It might be the same effect, don't know, didn't connect the dots back then.
I've spent a lot of time on Field Of View, but never considered Depth Of View past focus.
Might be why I'm better with a spotting scope than a camera.
(Never taken pictures of my fingers, my feet, etc with a spotting scope...
)
You guys mull it over, the only way I can explain it is I used to have a particularly clear sight picture with open sights, I don't anymore, and as the eye doctor predicted, it happened right at my 40th birthday.
That's when I went on a tear buying high powered optics, which screwed with my field of view and I was often looking for a corrective rear ocular lense.
Lower powered optics, which I use the most of now, give my Field Of View back, and don't require corrective ocular lenses most times, and I switched to aperture rear sights.
I can't stress enough making the rifle FIT YOU!
The fad right now is for the flat back 'Black' rifles, but you will hit a lot more shots when your fundamentals are correct, and that means getting that comfortable, natural cheek weld with a correctly adjusted stock, getting that eye on level with your chosen sights.
As for iron sights, I vote Yes on anything but a bench queen.