An illustrative embodiment of the present invention includes apparatus for determining the threshold value of visual stimuli presented at selected locations in the visual field of a subject. Programmed automatic data processing equipment is utilized in a unique two way feedback system with an external apparatus to present the stimuli in an unpredictable fashion and a subject response device. The subject communicates with the data processing equipment via the subject response device and the system interprets the responses to dynamically alter the stimulus presentation regime while communicating a feedback to the subject of correct or incorrect perception of a given stimulus.
Computer controlled apparatus for automatic visual field examination