The present disclosure relates generally to a system and method for testing and determining a visual field of a patient. In an example embodiment, a method includes instructing a computerized screen to display to a first visual field diagram to a patient, wherein the first visual field diagram includes a selected portion and instructing the patient to focus on the selected portion of the first visual field diagram. The example method also includes modifying the first visual field diagram to temporarily display an additional feature in an area corresponding to a part of the patient's visual field and receiving an input indicative that the patient saw the temporarily displayed additional feature. The example method further includes determining that the patient has vision in the part of the patient's visual field corresponding to the area in which the temporarily displayed additional feature was displayed based on the received input.
