entropy
Member
BTW I learned last night that my 1860 Army and Walker revolvers' front sights (8 and 9" barrels) are juuuust far enough away now that I can't get a sharp front sight focus with my naked eye. so I got that going for me.... which is nice...
Just break down and get progressives already; You'll be wearing them all the time, and several of us have mentioned how we shoot using them.
When i needed glases. I had my son measure the distance from my eye to the rear sight. On my crack shot. The eye doc made my prescription. The focal point starts at 18 inches. They work well. Only regret is getting the auto darken.
How does that help?
Setting the intermediate focus to be clear at 18" makes the rear sight crisp, the front sight just slightly blurred, but more than good enough to shoot, and the target anywhere from barely blurry to a ball of fuzz, depending on distance.
Regular progressive lenses can make whichever one of the three that you want crystal clear, with one of the other two slightly fuzzy , and the other fuzzy, just by tilting your head. Each type of shooting requires your focus to be sharp at a different distance.
Young eyes can easily change focus very fast. As we age, the crystalline lens in the eye hardens and we slowly lose the ability to focus near (presbyopia) and then the crystalline lens starts becoming opaque. (cataracts) As Offhand says, there are some exciting choices coming in accommodative InterOcular Lens implants for post-cataract patients. I too, am hoping I will not need surgery before they are perfected. (no signs of it yet; I have always protected my eyes. When I was young, I had Photogrey Xtra glass lenses, then Transitions when I went to plastic, then poly lenses. I currently have magnetic clip-ons for my regular glasses, and Transitions 8 Amerthyst for my Trapshooting glasses.)