A visual field test measures how far the eye sees in any direction without moving and how sensitive the vision is in different parts of the visual field. This helps doctors to find certain types of injuries and disease, like glaucoma.
What is a field vision test used for?
The visual field test is a subjective measure of central and peripheral vision, or “side vision,” and is used by your doctor to diagnose, determine the severity of, and monitor your glaucoma. The most common visual field test uses a light spot that is repeatedly presented in different areas of your peripheral vision.
What does it mean if you fail a visual field test?
A normal visual field test means that the patient can see about as well as anyone else does in the center and around the edges of the visual field. A test that shows visual field loss means that vision in some areas is not as sensitive as normal.