I underwent a total thyroidectomy for cancer the beginning of October and have been off thyroid replacement approximatly 4 weeks. I understand why I am sluggish and want to sleep all the time but I am having some serious balance and vision problems. I am 61 y.o.and had to have cervical surgery 2 months prior to thyroidectomy sor compression of cervical spine. I would like to know the possibility of balance and vision disturbance being related to thyroid surgery.