My 3 year old daughter has spina bifida, Chiari malformation & shunted hydrocephalus. A few days ago, she was complaining of headaches, so her neurosurgeon ordered a CT scan which showed that the shunt was fine. She hasn't been complaining of headaches anymore. Today we noticed that her eyes are crossing. One eye is much worse than the other. They seem to correct when she blinks, then slowly drift inward. She looks like she's looking a couple feet to the side when you tell her to look at something. Any ideas on what could be causing this?