right eye and about 20/20 in the left, but I still need readers. For shooting and walking around at the ranch I use bifocal readers from these guys. I spent from 8 yoa to 56 yoa wearing glasses and I still like having full frame glasses in front of my eyes in the woods or while shooting. I use clear top and either 1.25 or 1.50 bottoms on various styles. I have wrap around shooting glasses and also normal looking frames for other occasions. I still use the small half frame readers on most days in town.

I would guess that most shooters 50 and over could use some form of plus correction.
+1.50 is about what I use to actually read with, more than what I need for seeing sights. The lowest power I've seen in retail stores is +1.25, but I've seen online stores that sell weaker models. Not everybody needs a +1.50, some people might benefit from just +0.50.

I use 1.5+ single power glasses for reading but for shooting I use 2.0+ to see the sights reasonably well; target is fuzzy but sights OK.

TO BRING GUNS INTO THE OFFICE. HE CAN PUT A THING ON YOUR HEAD TO ALLOW HIM TO TRY VARIOUS LENSES TO FIND THE BEST OPTION FOR YOU. I SIGHT OUT THE WINDOW OF MY DOCTOR'S OFFICE AND HE CHANGES LENSES TO GIVE ME THE BEST SHOOTING GLASSES. I CAN GET BY WITHOUT THEM BUT I WANT GLASSES FOR SAFETY WHEN SHOOTING AND HE CAN SHARPEN UP THE IMAGE A LITTLE. I WAS THE FIRST IN HIS OFFICE MORE THAN 20 YEARS AGO; NOW HE ADVERTIZES FOR SHOOTERS.

Who specializes in prescription shooting glasses and will tweak for specific distance to the front sight...handgun, rifle, shotgun. Excellent results. I went to a local regional trap meet and stumbled into his rv sales booth.

--
Colonel, USAF (Ret)
NRA Life Member