I don't have a clue if this will help.
I have heard from a Alexander technique practitioner about how this can effect the eyes as well.
He was saying that the scarest session he had done when the lady suddenly started screaming.
transpires that when she was 16 she had a corrective eye op to sort some stuff out. He had just released what the original problem was 15 years later. Unfortunatly this ment that although the lady didn't need glasses anymore she did have an alarming diversion of ocular focus which was what the op was for in the first place.
MJ