Definition: A visual field test is a way to measure your visual field, or how much you can see to each side while focusing your eyes on a central point (peripheral vision).
Although many people mistake it as simply a peripheral vision test, a visual field test is actually designed to measure the overall field of vision as it is interpreted by the brain in four neurological quadrants. It can be measured by a technician with a simple hand or finger confrontation test or with an automated perimeter, a computerized device that collects your data and compares it to normal.
