Yup, that's an allergic reaction. As Soapets mentioned, there are anti-histamine eyedrops that will help. Also, don;t sleep with your windows open, and if you have fans in the windows, point them so they blow out, not so they suck pollen in!

Pollen, now there's a thought. We're supposed to get another maybe ten inches of snow today, so there's no pollen in this neck of the woods yet!