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3 Locations in San Antonio and Somerset

Puffer Test

Most people who’ve had a comprehensive eye exam are familiar with the puffer test. A puffer test is what it sounds like: With your head resting in the chinrest of a diagnostic machine called a slit lamp, your eye doctor uses a puff of air across the surface of the eye to measure the intraocular pressure, “inside” pressure, of the eye.

High pressure is a key indicator of glaucoma, a series of eye diseases that attacks the optic nerve.

How does a puffer test work?

Puff tests are quick and largely without discomfort. You’ll look at a light inside the machine while your eye doctor blows a gentle puff of air across the surface of your open eye. A device called a tonometer measures the eye’s resistance to the air, and calculates your internal eye pressure.

This usually takes only a few moments, and while your eye might water slightly, the procedure is generally over before you know it!

A puffer test is a part of glaucoma testing, and is a routine part of a comprehensive eye exam. Glaucoma is a serious disease of the optic nerve, and often doesn’t present itself until vision becomes impaired—that’s why it’s so important to have a puffer test to measure your intraocular pressure.


Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!


Somerset Patients: After many years of taking care of your eyes and vision, we have made the difficult decision to close our Somerset location doors and merge with our Potranco location. After May 17, we will no longer see patients in Somerset. You will still be able to pick up existing eyewear orders through May 22, after which they will be transferred to our Potranco location (9822 Potranco Road, Suite 110, San Antonio, TX 78251), or you can request shipping to your home. It’s been a pleasure serving the great community of Somerset, and we look forward to seeing you at our Potranco location.