If your eyes are getting older .... just go with a good adjustable receiver (peep) sight like the Williams and get one that puts the peep hole as close to your eye as possible .
A Peep works for us because you look through the hole , not at it , and a smallish size peep hole actually sharpens the front sight and target . Your eye naturally centers itself in the peep hole opening . It takes some practice but you must trust your eye , look through the peep and put the front bead on the target ... with practice you wont even think about the peep hole .
Trust me ...the peep works ...almost as good as a scope .
Get different sized peep holes and try them all ...one will help your shooting .
The only sight easier to use is a red dot sight but those look so out of place on a 94 .
Gary