There are forms of optic neuritis that exist. Some are genetic diseases. Some attached to MS diagnoses. Some occur in patients with very low B12. If the B12 is not fixed, blindness can result.
And if your blurred vision is vertical, that has been posted on Myasthenia Gravis forum as typical of MG. Horizontal or sideways blurring is not. ( I am not sure how verifiable that is however).
I get blurred when tired, but it is always temporary and goes away quickly. Long stints on the computer affect my distance vision. One consequence of getting older is a lag in focusing ability with various distances. Only an eye doctor can evaluate that. I wear trifocals and have for almost a decade.
Uveitis is also possible, but there are other symptoms with that.
(a friend of ours has this in one eye)
http://www.mayoclinic.com/health/uve...CTION=symptoms
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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