Hi! I understand your concerns...do you still have the eye pain? I think you can be confident that you don't have optic neuritis if you have been cleared by 3 doctors. Considering your findings on your spine MRI's, you might find it helpful to see an Ortho/Spine specialist for confirmation that your symptoms match up with spinal issues.
Hi, from my understanding of the medical opinions, test results and your anxiety you've mentioned experiencing still, the problem you're having seems to be more likely related to the amount of anxiety you have regarding your health.
Keep in mind IF the original investigations into a neurological conditon like MS has triggered something like health anxiety, thats not typically the type of anxiety that can ever be reasurred for long by specialist opinions, test results, alternative diagnosis etc etc because health related anxiety is a legitimate medical condition that requires its own type of sspecialists and treatment plan.
I would recommend you redirect your attention towards getting all the help you can for your health anxiety and that should help get you moving in the right direction of becoming convinced that youre not dealing with a neurological condition like MS.
Hope that helps......JJ