Eye fatigue

[Kryogen]

after shooting pistol with irons for 1-2 hours, my eyes get all blurry.
scopes dont do that to me, I can shoot all day.

 

[kamlooky]

My shooting eye is less than forty vision.
Last time at the range I got flustered and started shooting left handed.
Works, but the groups aren't as tight.
I practice this so I know when hunting I have an option when my shooting
eye gets lazy, fuzzy, unfocused.
Hence the big optics on my hunting rifles.
Sucks, but that's the cards that are dealt.

 

[AdrianM]

I read somewhere that one way to set your eyepiece focused for your vision is to go out at dusk and quickly look through your scope at the sky. If the crosshair is immediately clear, you're all set, if not you turn the eyepiece until it is clear at a quick glance.

Has always worked well for me.