I have a customer who is a high minus with a high astigmatism. He has a pair for reading and a pair for distance. The distance is fine, but for reading he says that when he rotates his head things seem clearer. I don't mean turning his head side to side I mean actually cocking his head to one side while looking at something. When he just tilts the glasses and looks out of them that actually makes it worse. I re-did the lenses in a different material (from 1.7 to 1.67) and that seemed to help but not totally. What is wrong with this guy? I don't think it's an axis issue.