While there is no direct link, persistent dryness can stress the visual system, which may contribute to or worsen headaches. […]
Do Dry Eyes Cause Headaches?

While there is no direct link, persistent dryness can stress the visual system, which may contribute to or worsen headaches. […]
On top of that, certain factors can contribute to morning dry eye symptoms, such as:
-Incomplete lid closure
-Dry sleep environment
-Sleeping in your contact lenses
-Using screens before bed
-Not removing eye makeup
-Not drinking enough water […]