question: Hello doctor, I have an astigmatism of O.D. -0.75, -1.25 90 OS: -1.0 -0.75 85. The last week I have had constant headaches and periodic blurry vision. I am wondering if this could be a result of not wearing my glasses. How often should I be wearing my glasses? The periodic blurry vision started two weeks ago and one week ago the constant headache started (4 to 6 out of 10). I have seen a few different doctors about it but they are not sure.