Hi. I'm online and happy to answer your question today.
Thanks for all that excellent background information.
From what you have said, I agree that your most likely issue is optic neuritis.
The other issue is whether or not you have active multiple sclerosis at this time or if it will manifest itself more in the near future.
It might be helpful to be evaluated by a neurologist who treats patients with MS for a complete workup and review of your test results.
I don't think this has anything to do with your sinus or allergies.
Does this make sense to you?
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