Cataracts/Migraines

I have always suffered from migraines (due to barometric pressure). Any rapid change in weather will bring it on.  Did you suffer migraines prior to surgery?  Migraines are different than headaches.  If there is a lot of difference between your eyes/vision that can cause double vision/headaches.  Does your 2nd eye have a cataract?   If not and you only needed one eye done you should be able to get glasses or contact lens to balance your eyes out.  If that doesn’t help sometimes Medicare  will cover cost of second cataract surgery.

I think that if there is a significant difference in the prescription (more than 1D or so) of the 2 eyes and one uses glasses, the different sizes of the image on the retina can cause double images as well as headache etc.  Use contact lenses, as needed, can improve the situation. The other is to not try to achieve the best distance vision in both.eyes, when using glasses, to keep the difference in the 2 eyes glasses prescription small. As an example, if the operated eye prescription is plano, while the unoperated eye prescription is -2.0D for distance, just use -1.0D glasses for the unoperated eye.

Its mostlikely a tension headache not a migraine and its due to the change in your vision. They’ll go away as your brain gets used to it.