With my left eye, I can see clearly from the tip of my nose to about 24 inches away. However my right eye sees clearly from about 18 inches to infinity. So, if i shoot left-handed, i can see the iron sights, but not the target. if I shoot right handed, I can't see the iron sights, but the target is clear. I can bird hunt with a shotgun, shoot a rifle with a scope, or a pistol with a red-dot. However, I can't use iron sights for sh*t...
Sounds like you've got a nice natural mono vision set up going.....to bad it's for the wrong eye. You could do contact or glasses to kinda flip that around so your able to use the right eye.