Visual Field Testing

Visual field testing is a clinical diagnostic procedure used to measure an individual’s peripheral vision. It is used to measure and assess an individual's ability to see objects in their peripheral (side) vision. In a typical examination of the visual field, the patient sits with their head in a chinrest, and looks straight ahead at a central point. Lights are then systematically flashed in different areas of the visual field. The patient indicates when they can see the light, and this data is used to create a visual field map. Visual field testing is important for diagnosing a range of conditions affecting vision, such as glaucoma and tunnel vision. It is also used to monitor the progression of these conditions to ensure adequate treatment is being received.