I hate when they dilate my eyes, they stay that way forever, I am very sensitive to the drops, even when they neutralize after, I still have issues.
I would certainly call the doctor's office and let them know what happened. It could be a coincidence, but, also could be a type of allergy, they can do weird things to folks at times.
You might call your eye doctor's office and describe what happened. I'm wondering if you are sensitive to the eye dilation solution? Or it could be just a coincidence that you got the sinus infection after your appointment.