Patent ID: 9717465
Date: 2017-08-01
CPC Classifications: A61B,F04C

Claim:
1. A vision examination system comprising: (a) a computer-operated display device, which displays visual stimuli to a subject; (b) a synchronizer, which synchronizes the visual stimuli with a sampling rate; (c) one or more sensors, which detect the subject's responses to the stimuli; (d) a data acquisition component having an analog to digital converter, which acquires waveforms from the sensors and converts the waveforms to digitized signals; (e) a digital storage medium, in which the digitized signals are stored; and (f) a computer having a central processing unit (cpu); wherein the cpu executes programming which causes the computer to (g) generate a plurality of signal waveforms, each signal averaged waveform being the average of at least two digitized signals; (h) analyze each signal-averaged waveform to detect signal peaks and signal troughs in the signal-averaged waveform; (i) for each of the signal-averaged waveforms in which the signal peaks and the signal troughs were detected in step (h), determine (j) calculate a percentage of the signal-averaged waveforms in which the detected signal peak or the detected signal trough occurred during the predetermined time frame; and (k) if the percentage calculated at (j) is greater than a predetermined value, generating a second digitized signal-averaged waveform from the signal-averaged waveforms in which the signal peaks and the signal troughs were detected in step (h).