porimetria

Porimetria is a medical term referring to the measurement of the visual field. The visual field is the entire area that a person can see when their eye is fixed in one position. This area includes central and peripheral vision. Porimetria is typically performed using a visual field analyzer, also known as a perimeter. These devices present a series of lights of varying intensity and location to the patient, who is asked to indicate when they see the light. The resulting map of perceived lights creates a representation of the patient's visual field sensitivity.

The primary purpose of porimetria is to detect and monitor vision loss, particularly defects in the peripheral visual field. These defects can be caused by a variety of conditions affecting the optic nerve or the visual pathways in the brain. Common conditions evaluated with porimetria include glaucoma, optic neuritis, stroke, and certain neurological disorders. By mapping the extent of vision loss, ophthalmologists and neurologists can diagnose these conditions, assess their severity, and track their progression over time. Early detection through porimetria can lead to timely treatment and potentially prevent further vision impairment. The results are often presented as graphs or charts illustrating areas of reduced or absent vision.