Daily headaches 6 months after LASIK.

I had LASIK 6 months ago. I had moderate myopia (-7) and astigmatism (2.5). Post-op RX OD: plano, 0.25. OS: -0.25, 0.25. I see well in bright outdoor conditions but have blurred vision in dim light. I have daily headaches that I wake up with. They're worse the first 1-2 hours after I wake up, but are still persistent during the day. I have mild CI (6 diopters at near) and have been treating dry eyes (plugs, drops, compresses). What might be the cause of the headaches and poor dim light vision?

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