I've been learning a lot about visual issues since my mva 7 months ago and was diagnosed with convergence insufficiency.

I didn't really quite grock how the eye is a part of the brain! So I've been told eye twitching and blurring are signs that your eyes are fatigued and need rest.

I have also heard that your vision may change with PCS/mtbi, but you may want to get your eyes checked out by a neuro-opthalmologist or binocular vision clinic if the blurry vision continues.