What is the name of the test that measures intraocular pressure?

The test that measures intraocular pressure is called tonometry. This procedure is essential in ophthalmology because it helps assess the risk of glaucoma, a condition characterized by increased pressure within the eye that can lead to optic nerve damage and vision loss. Tonometry can be performed using various methods, including applanation tonometry and non-contact tonometry, each providing valuable information about the eye's pressure.

Ophthalmoscopy refers to the examination of the interior of the eye, particularly the retina, to detect various ocular diseases, not to measure pressure. Refraction involves determining the eye's refractive error and assessing the best corrective lenses needed for clear vision, which is unrelated to intraocular pressure measurements. Optometry is the field of eye care profession focused on vision health, examinations, and correction, encompassing various services, but it is not a specific test for measuring intraocular pressure. Therefore, tonometry is the most accurate answer when discussing the measurement of intraocular pressure.