I went to the opthamologist nad he told me I was going blind. I usually wear contact lenses and my eyes have become so sensitive to oxygen deprivation that blood vessels in my eyes balls are starting to obscure my vision. Im lucky in that by wearing glasses this process will not get any worse and if I want to were contacts for a few hours at a time I can. It was still one hell of a shock though. anyone else had this problem? Cllr