I am now 7 months into my pcs/ptsd. It would make sense that you can feel the changes in heart rate/blood pressure flow when taxing your eyes.

Your vision issue may be related to eye tracking in motion.

There was a quick, first test that alerted a vision issue during my neuro-psych. evaluation.

The neuro-psychiatrist held a pen about 8 inches from my nose. He then moved it directionally toward my right and then left shoulder. He asked me to track it with my eyes. I dried heaved and this triggered a panic attack.

I think investing in a neuro-opthalmology appointment or vision efficiency exam is money well spent.

There is a website that has referrals (help! I cannot remember it.lol) and sometimes prism glasses and vision therapy help.

My own vision therapy has stagnated; I think it is just taking time to rebuild the pathways.

Good luck!