Welcome to ThisIsMS, Debbie.
You seem to have a good medical team. Your symptoms COULD be MS or possibly something else. It is possible that your diagnosis 20 years ago was correct; MS often has periods of activity alternating with quiet periods. Optic neuritis is a common symptom of MS.
Although I have not found an expert who agrees with me, I suspect that excess insulin is involved in MS (it has already been linked to many other problems – high blood pressure, heart disease, obesity, diabetes, and even Alzheimer's); I encourage you to ask one of your physicians for a "fasting blood insulin test" (The optimum insulin test result is 3 UU/ML or lower.). The test has been available since about 1960; it is one of the least expensive blood tests. Anything that raises a person's blood sugar (like refined flour, sugar, white potatoes, white rice, etc. – even the mucus in a sinus infection) causes the insulin level to rise, too. A person can have a normal blood sugar level test AND the insulin level can still be high.
All the best to you.
Thank you for answering! I have a fantastic medical team, especially Dr Sam my opthomologist - just love him. I haven't had a fasting blood sugar done in about 10 yrs or so and then I was told I had hypoglycemia. I am on a strict gluten free diet and while I do eat rice occasionally I rarely eat potatoes - no sugar - never really had a sweet tooth and don't even have any in my home. There is gluten in things you would never expect it to be in, so I pretty much stick to meat and veggies and nuts. I love veggies! I have yogurt and almonds and a banana for breakfast every morning and I cook all my own food (terrified of getting sick again from the wheat) so I'm not sure if the insulin is an issue, but I ask them to do the test. I have been wrong once or twice before
I do know that in the past (when I was still eating flour) and I would go on the Atkins diet the difference in how I felt was amazing, more energy, brain seemed to work, didn't get that "I'm lost in a fog" feeling, etc so I am not ruling that out at all. I go back to the Neurologist on the 26th, so I should know then.