Thank for asking to HCM
I can understand this your CT head show no abnormality and you have symptoms of central nervous system
related but this is not due to any pathological changes in brain either, but your psychological condition might be the reason for this, your vision problem is nothing to tale with your head injury
on my opinion for that you have to consult the ophthalmologist, for the rest of the symptom control your thoughts away from the anxiety
, hope this information helps you have nice day.