I've been avoiding my annual eye exam. I'm afraid of the part where they puff air in your eye. Technically, it's called the puff-of-air glaucoma test. A more accurate description would be the hurricane-strength-wind test. The machine even looks scary, all hulking in the corner, waiting to be the last part of your exam so you can't even get it over with right away. Last year, my optometrist let me hold my finger in front of the puff of air first to confirm that, indeed, it's only a small puf