I had horrid problems with ragweed when living in metro Chicago and going to grad school at UW-Madison. My eyes itched so horribly they would keep me up at night. They tried treating it with Allegra, but that scarcely put a dent in it. So, I asked for eye drops instead and got a Rx for Optivar. That stuff was a life saver! It completely cleared up my eyes and I highly recommend it for anyone with similar issues.
Mercifully, I have no allergy issues in NJ, though the Princeton area is very green and just brimming with nature.