I'm so sorry for all you go through. I have used glucosamine sulphate 750mg 3X daily for 30 years. no chondroitin. It has relieved my fibromyalgia pain immensely. When I went on vacation for 3 weeks and forgot it, the pain came back terribly, it t0ok 3 weeks to get back to normal when I got home. I have no glaucoma although I have that checked regularly, no diabetes but many other eye problems including both cataract surgeries twice. I am 77.