The air puff test, or non contact tonometry, is a quick and painless way to determine the pressure of the fluid inside your eye.  A modern non contact tonometer will give a very small, almost imperceptible puff. Determining the pressure inside your eye is an important indicator of eye health and an important factor in determining if you have glaucoma. If you have a strong dislike to the air puff test, your eye pressure can still be measured with an applanation tonometer. This involves using a single eye drop to each eye and gently measuring your eye pressure with a Goldmann applanation probe. The procedure is very accurate and completely painless.