I HOPE YOU GET WHAT YOU NEED. I DONT KNOW WHERE YOU WENT TO SEE A DOCTOR BUT I TRAVELED TO ROCHESTER,MN TO SEE THE HEAD NUEROLOGIST THERE AND THAT STARTED ME ON MY JOURNEY i had the shunt put in a yearage last august and just lately i have been having headaches and my balance is not good again. i also shuffle my feet starting in the late afternoon (it is getting earlier lately) and yes my vision is blurey . i would wish you all the best and recomment the mayo clinic. they helped me greatly.

john ps i also may need another adjustment on my shunt