Visual perimeter measurement system and method

摘要

In one example of the invention a patient display is provided on which a fixation graphic or video is shown in substantially the center of the display, and then target graphics or video are shown at different positions on the display about the center. A test subject is positioned in front of the patient display a known distance therefrom, and a camera captures an image of the test subject's eyes, to allow gaze direction determination to be performed. The captured images are displayed to a clinician user by a controlling test application, the clinician making a determination based on the images as to whether the test subject saw a target graphic or video when it was displayed. The clinician user then makes an appropriate input into the controlling test application, which also logs the position at which the target image was displayed. By displaying target graphics at multiple locations on the screen and logging the clinician inputs, the controlling test application is able to build up a plot of the peripheral vision field of the test subject. This plot can then be graphically displayed to the clinician user, and stored with the test results for future clinical use.

主权项

1. A peripheral vision measurement system, comprising:
a subject video display arranged to display test images to a test subject; a camera arranged to capture images of the test subject; a user video display arranged to display captured images of the test subject to a user; and one or more processors arranged to control the subject and user video displays, the user display being controlled so as to be augmented with at least one indicator relating to the position of a test image on the subject display, wherein the one or more processors are further arranged to use determination data as to whether the test subject has seen a test image when displayed on the subject video display, said determination data being recorded against the position of the test image when displayed on the subject video display, whereby to collate measurement data indicative of the peripheral vision field of the test subject, wherein the one or more processors have at least one input arranged to receive feedback data from the user relating to the displays, the feedback data relating to a judgment by the user as to whether the test subject has seen a test image when displayed on the subject video display, the feedback data being used as said determination data.