In a method for testing the visual field of a patient especially the
central visual field, stereoscopic or binocularly displaced fixation
images are presented under computer control to the respective eyes of the
patient. In addition, a series of test images viewable by only one of the
patient's eyes is generated under the control of the computer. The
fixation images, one for each eye, are presented on two separate
electronic displays, while the test images may be produced on a third
display member different from the electronic displays. The computer is
programmed to precisely determine a boundary between points corresponding
to unseen test images and points corresponding to seen test images, by
automatically testing additional points in a region located about the
curve and between points corresponding to unseen test images and points
corresponding to seen test images.