I have had vision issues along with a PMR diagnosis. I suggest you visit a qualified Neuro- Optometrist. You can find a provider near you through the Neuro Optometric Rehabilitation Association (NORA): https://nora.memberclicks.net/find-a-provider#/.
Simply put, they are optometrists who have specialized training and will uncover any issues with how your eyes and brain work together. It’s been a life (and sanity) saver for me. I wish you well on your healing journey.