TIA's and Scolosis

I'm 58yrs old had a toracic operation for scolosis with a 148 degree curvature 11 years ago.It was corrected to about 74 degree. Since then I have a lot of pain above the fusion around C-3 or 4 . I have developed opened angle glaucoma. Can there be a relationship with lack of oxygen to the brain and optic nerve and a pinched or collapsed area of my spine above the fusion? I also have had some minor TIA's that sem to be happening more. I take no medication except an occasional muscle relaxant (Skelaxin)Baby ASA and glaucoma meds. I am mostly vegan except occasionally.