You should still be able to get things tuned up better than that, IMO.
Two things that should help:
#1 - Find a new Optometrist. I am repeatedly amazed at how bad most Optometrists are. Between my failing sight and the wife's multiple eye surgeries we have seen a good number of them. Vast majority of them are not worth the paper their degree is printed on. Most of them have us diagnosed before the hand shake is complete. From our experience I think about 75% of them should lose their license! When you find a good one - Be sure to let them know about shooting the bow and detail how the bow/sighting works and what issue you are having. Don't let them get away with saying something asinine like bifocals or trifocals...that's ridiculous!!
And for the Love of God....Do not get transition lenses for shooting a bow. They are nice for driving the car or watching bikini babes on the beach. But they are complete demonic plagues of evil in the field!!
#2 - Drop the aperture size of your peep. Way too many people who are having a hard time seeing make the mistake of "increasing" the size of their peep aperture. This is exactly the opposite of what you need to be doing. As our eyes age and we begin to lose definition we really are losing our depth of field, in most circumstances. Think of the peep sight as the iris of a camera. If we set the iris wide open we blur the background and the foreground leaving only the subject in focus. When we reduce the iris we start to get more depth of field and the background and the foreground start coming back into focus.
You don't want to immediately jump into a small target size peep aperture as we don't want to restrict our low light opportunities. So you want to gradually move down from where you are at until things reach an acceptable compromise of clarity, depth of field and low light vision.
Good luck to you. Hope all works out and you find a positive solution.
