What type of test does a tonometer conduct?

A tonometer is a device specifically designed to measure intraocular pressure (IOP), which is the fluid pressure inside the eye. This measurement is critical in diagnosing and managing conditions like glaucoma, where elevated pressure can lead to optic nerve damage and potential vision loss. The procedure typically involves the application of a small amount of pressure to the surface of the eye, and the tonometer determines the resistance of the eye to this pressure, providing a numerical reading of IOP.

In contrast, other types of tests serve different purposes: a color vision test evaluates an individual’s ability to perceive colors and detect color deficiencies; a visual acuity test assesses the clarity of vision at various distances; and a peripheral vision assessment measures the extent of the field of vision. Each of these tests focuses on distinct aspects of visual function, while the tonometer specifically targets the measurement of intraocular pressure, making it the appropriate choice in this context.