From swimming I occasionally get pink eye, which is not serious but it makes your eyes water and itch. Prescription eye drops clear it up in a day or two.
Last year and this year about this time I seem to have gotten a mild case, not annoying enough to bother going to the doctor.
Then Mrs NoCo mentioned to me yesterday that she has developed an allergy to all the tree pollen in the air: itchy watery eyes. Nether of us used to have allergies.
I guess now we do.