As long as Jenna can remember, every spring and fall in Ohio brought a familiar rite of passage, red, watery, puffy eyes that were hard to keep open at times, and bouts of near-constant “a-choos” that literally brought her to a standstill because, well, you can’t walk and see where you’re going when your eyes are half closed and you’re sneezing your fool head off. Between tree pollens in the spring, and ...