The equinox is almost upon us, the outdoor temperature is slowly falling from unbearable to somewhat reasonable, and for me that means two weeks of some very particular balance of humidity that causes my eyes to go into self-assault. The same thing happens for two weeks in April, a bit after the other equinox.
I get a lot of eye gravel, my eyes treat that as foreign objects and make gunk to defend itself, then treat the gunk as foreign objects in an evil feedback loop.
Ironically enough, inserting actual foreign objects, contact lenses, protects the eye against itself and breaks the cycle.