Well I've had a traditional eye exam recently, and found nothing out of the ordinary beyond a slight prescription for far sightedness which I had before the accident anyways (getting old....) so I don't think that's it. My eye doctor even mentioned something he looked up just for my PCS case about the eyes not working together or something and did another couple tests and he said I passed them. I've had no problems with my vision that I did not have before the accident, just very sensitive to light. When I feel my worst, just the refrigerator light hurts my head!