Question: When they do the “air puff” test at the eye doctor what is happening, and what information does it give you? I’m not a fan, but I realize it must tell you something useful.
Answer: If you come in for an eye exam and we do that quick little “air puff” test, you’re experiencing a screening tool called non-contact tonometry. It can feel a bit startling and sometimes even momentarily uncomfortable, but it’s actually a gentle and non-invasive way for us to check the pressure inside of the eye, known as intraocular pressure (IOP). Think of your eye like a tiny water balloon: inside each eye there is a clear fluid, and there needs to be a certain amount of internal pressure for the eye to keep its shape and help you see. However, if that fluid pressure rises too high it can put strain on the optic nerve–that all-important “cable” that carries visual information from your eyes to your brain. Over time, elevated pressure can increase your risk of glaucoma, an often painless but serious eye condition that causes gradual vision loss if it goes undetected or untreated.
Here’s what’s happening during that particular test: the instrument sends a precisely measured puff of air toward the surface of your eye. That puff briefly flattens the cornea, and sensors measure how much force was needed to do that. From that measurement, the device calculates your intraocular pressure and gives us a quick snapshot of whether your pressure is in a healthy range. Some practitioners may repeat the measurement using a different method (or prefer an alternate instrument altogether to measure IOPs, such as a Goldmann tonometer, Tono-pen, or similar), but the air-puff testis one relatively quick andeasyway to catchpotentialissues long before you’d notice any symptoms. If your tonometry readings are higher or lower than what is expected, it doesn’t automatically mean something is wrong; it just tells me we should take a closer look. So while it may not be anyone’s favourite part of their exam, measuring intraocular pressures is a small time investment that has the potential to give us big insight into your eye health.
At Mayfair Optometric Clinic we provide a welcoming environment for patients to receive eye exams and pick out the perfect eyewear that works for each individual.
Please give us a call to book your appointment with Dr. Peddle, Dr. Stasiuk or myself
