Your eyes my eyes what scopes....
I would just like to put on table for consideration. Me 64.5 as well, and I would start my story like this:
I am using reading glasses when I have things between fingers, but I hate to wear glasses on the go only sometimes over night car drive to see my odometer
On borderline with diabetes (between 5 and 6) for over 5-8 years and not taking medications nothing at all, not for blood pressure not for cholesterol, nada....
Every morning coffee I like to sit on my rear porch (summertime), and train my eyes looking around far...training the muscles for details.
Mostly happy what I see, but sometimes I see a shocking blur...need 10-15 minutes concentrating to get back a full clarity. And no checking cellphone for emails - without glasses - because that will ruin my eyes for a half day for sure.
From here I go to my gun range, usually 100M BR.
I like high power scopes with thin reticle SFP, my favourite is 10-50x60.
Usually I zoom in all the way to ring center, 45x power if some mirage or the sunlight is behind my head and when the sun goes around I go with full x50 power.
At that power I don't watch the white paper or the rings colour (usually black this what I print diy),
I trained my eyes and the brain - not to see but to see - the X center dot and the reticle in a same time... not either one of the two but both.
So, just saying, for target shooting the sharpness and clarity is not a #1 in scopes.
But again I like toys as well, this scope I am dual purposing between my Impact @ 100 and my f-class 308 @300 because I can see the POI holes.