hello-- Had some of the SAME issues after my cataract surgery a year and half ago.
Pain in left eye and also flashing blurring. Told--dry eye, then floaters, then moving lens, then mites, then cornea neuropathy, and moving iris!!!---probably 10 top ophthalmologists!---
they really don't know....But I suggest you do see a neuro ophthalmologist to check out the cornea nerves....where are you located?