Dave,
There's a logic to it as far as optical people are concerned, but not for shooters. They recommend that we give optimum enhancement to the master eye & dial back on the other to permit close(r) vision. Sucks with flags.
All,
As far as keeping spectacles located, I have a pair of Zeiss shooting frames I found on Ebay & ones from an old Aussie interchangeable lens shooting specs. Both are fitted with ear loops & both hold in place with recoil.
John
Glasses for F- Class
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