Your visual field refers to the area in which you can see, including your peripheral vision. A Visual Field Test is used to help determine any loss of vision and is a useful aid in diagnosing diseases. Based on the findings of your Annual Eye Health Evaluation, Dr. Gramanzini may determine that it is necessary to check for any loss of your visual field, or monitor any loss of vision previously diagnosed. Also, certain medications and medical conditions can affect your field of vision, so it may be necessary to monitor any possible ocular effects on a regular basis.