Abstract: Apparatus for testing a patient's visual field, the apparatus comprising: means for recording the results of the patient's responses to one or more visual field targets (5) presented during a visual field test; and a fixation loss switch activatable by an observer observing the patient during the visual field test for identifying periods of fixation loss by the patient. The results recorded during periods of fixation loss are identified as being unreliable. Also disclosed is a method of testing a patient's visual field.

Abstract: A method for testing a patient's (2) visual field using testing apparatus. A fixation target is provided on a display (3) at a known target position and the patient's (2) direction of gaze is tracked using an eye tracker to determine the patient's point of regard. A marker (5) is provided on the display (3) indicating the patient's (2) point of regard, where the marker (5) moves with movement of the patient's (2) point of regard. It is detected when the marker (5) is moved to the fixation target and a new target is then provided on the display at a further known target position. The new target is recorded as detected if the marker (5) is moved to the new target, with the new target then becoming the fixation target. The steps are repeated for further new targets for determining the patient's (2) visual field based on the positions of the new targets that have been detected.

Abstract: A method for testing a patient's (2) visual field using testing apparatus. A fixation target is provided on a display (3) at a known target position and the patient's (2) direction of gaze is tracked using an eye tracker to determine the patient's point of regard. A marker (5) is provided on the display (3) indicating the patient's (2) point of regard, where the marker (5) moves with movement of the patient's (2) point of regard. It is detected when the marker (5) is moved to the fixation target and a new target is then provided on the display at a further known target position. The new target is recorded as detected if the marker (5) is moved to the new target, with the new target then becoming the fixation target. The steps are repeated for further new targets for determining the patient's (2) visual field based on the positions of the new targets that have been detected.

Abstract: Apparatus for testing a patient's visual field, the apparatus comprising: means for recording the results of the patient's responses to one or more visual field targets (5) presented during a visual field test; and a fixation loss switch activatable by an observer observing the patient during the visual field test for identifying periods of fixation loss by the patient. The results recorded during periods of fixation loss are identified as being unreliable. Also disclosed is a method of testing a patient's visual field.