I am glad to see you are in vision therapy. I believe anyone with vision deficits following a concussion or any hit to the head should be seen by a vision specialist. Seeing a developmental eye doctor is essential as they do look beyond the normal vision screen which most people will pass. Vision therapy is important and can be very helpful. I see a PCS pt for therapy and we work alot on her vision which is improving. She c/o all of the symptoms many report here. My best friend recently fell running a marathon and I told her that she needs to ask about PCS as all her tests have come back negative and she is describing the same visual problems,irritability, lability, etc that many of you and my current pt are stating. She states everyone feels she is making this up. She is off of work and doesn't see how she will go back at this point. I told her to go to a vision specialist...I am eagerly awaiting the results and hope she can benefit as well. Good luck to everyone.