What does "tonometry" measure?

Tonometry is a vital test used to measure the intraocular pressure (IOP) inside the eye. It is primarily utilized in the detection and management of glaucoma, a condition characterized by an increase in IOP that can lead to optic nerve damage and potential vision loss. The procedure involves using various methods, such as Goldmann applanation tonometry or non-contact tonometry, to assess pressure levels.

Measuring the pressure inside the eye helps eye care professionals determine if a patient's IOP is within a healthy range. Elevated pressure may indicate a risk for glaucoma, prompting further evaluation or treatment. Regular tonometry is an essential part of comprehensive eye examinations, particularly for patients with a family history of glaucoma or other risk factors.