What is the main purpose of performing an ocular pressure test?

The primary purpose of performing an ocular pressure test, also known as tonometry, is to screen for glaucoma. This condition involves increased intraocular pressure, which can lead to damage to the optic nerve and result in vision loss if left untreated. By measuring the pressure within the eye, healthcare providers can gain critical insights into a patient's risk of developing glaucoma. Elevated pressure readings may indicate that further tests and evaluations are necessary to assess the health of the optic nerve and overall eye health.

While visual acuity, lens prescriptions, and retinal health assessments are important aspects of comprehensive eye care, they focus on different elements of ocular health. Visual acuity tests measure how well a person can see, and determining a lens prescription involves evaluating how different lenses can improve that visual clarity. Assessing retinal health looks at the condition of the retina and other structures within the eye. However, none of these perspectives directly involve measuring intraocular pressure, which is specifically critical for glaucoma screening. This makes the ocular pressure test an essential tool for early detection and intervention in glaucoma cases.