Couple suggestions, Preacher:
You were playing great up until recently, then your vision suddenly changed dramatically. There might be a positive aspect to that in the sense that some new treatment approaches could alleviate the causes(s) of that sudden change and result in an equally sudden improvement. I'll explain:
Glaucoma is a worldwide problem and as can be expected, there is a huge profit incentive for medical companies to research and produce excellent new means of helping visual patients. There are an amazing amount of new glaucoma amelioration products in many immediate pipelines. There are dozens of promising new drugs, as well as implant solutions. read more here:
http://tinyurl.com/oahqxkx
Hold onto your pool equipment. That will promote an optimist view of the possibility that you'll be playing well again in the near future, which in turn helps your attitude and most important-- your immune system, thereby making any treatments you receive as maximally effective as possible.
Try playing less than you were, but don't abandon playing altogether.
Play more Straight Pool with its bonus of shorter shots and shots closer to the pockets.
Some of this may sound a bit easy to say, but I can relate a tiny bit after being virtually blind for several months a few years ago after an accident (retinal detachments, spider web floaters, plenty of surgical eye procedures -- everything). So I had lots of time to deeply contemplate the prospect of losing pool and all else that was visually-dependent in my life, both occupationally as well as leisure time pleasures (reading, billiards, painting, pleasure traveling, photography, woodworking, etc.)
Don't give up, and do stay even more proactive and medically informed about treatments than any single ophthalmologist can be. Doctors will respect your will to conquer this, and they in turn won't give up on "an old guy" as sometimes happens if they sense mere layman information or that you've given up your will to conquer the problem.
I'm turning 80 in a couple months and have learned more than I ever thought I'd want to know about medical facts and possibilities. With plenty of good results for any procedures that go along with being in "a more advanced state of youth."
Stay in touch if you care to.
Arnaldo