Well, no, generally speaking, it will not lead to headache. So you do not need to worry about it. In common, the cornea has a dome shape, like a ball. However, the structure of the cornea is just not strong enough to hold this round shape and the cornea bulges outward like a cone. At this moment, we can say this condition as keratoconus. And generally speaking, when it occurs, the changes to the cornea can make it impossible for the eye to focus without eyeglasses or contact lenses. And in most cases, a corneal transplant may be needed to restore vision if the condition is severe. And for the symptoms, blurry vision, double vision can be possible. anyway, just pay more attention to it.