contact your primary care physician for a input on this. sometimes changes of vision between eyes can cause this or underlying things like optic neuritis so also have your optyhalmologist check this out.
the enteropathic arthropathies are related to HLA B27 and uveitis and cause various GI tract symptoms too.
I cannot do anything in a moving vehicle besides drive or talk as trying to read or even look down while moving makes me sick. I do have history or neurological problems related to my eyes.
wish you the best,