Head aches blurry vision and bit spaced out had it for long time now comes and goes?

Need to be seen: Headaches associated with blurry vision could be a sign of narrow angle glaucoma which can make one lose vision. I would be seen quickly to make sure this is ruled out with an eye specialist who does a test called gonioscopy. Could also be as simple as eye strain with dryness in the eye, but need to rule out narrow angles because vision threatening.