Patent ID: 8100533
Filing Date: 2012-01-24
Classification: A61B

Abstract:
1. A method of screening for ocular deficiency in a patient, comprising the steps of: displaying a plurality of successive high contrast patterns on a display device; detecting visually evoked potentials (VEP) generated from said patient observing said high contrast patterns; generating a plurality of signals from said VEPs of said patient observing said high contrast patterns; signal averaging said plurality of signals to yield a signal averaged waveform, said signal averaged waveform comprising an N75-P100-N135 complex: identifying said N75-P100-N135 complex in said signal averaged waveform: comparing parameters of said N75-P100-N135 complex to model parameters; displaying a plurality of successive low contrast patterns on a display device; detecting VEPs generated from said patient observing said low contrast patterns; generating a plurality of signals from said VEPs of said patient observing said low contrast pattern; signal averaging said plurality of signals to yield a signal averaged waveform, said signal averaged waveform comprising an N75-P100-N135 complex; identifying said N75-P100-N135 complex in said signal averaged waveform: comparing parameters of said N75-P100-N135 complex to model parameters; and determining a likelihood of a visual defect based on said comparison of said signal averaged waveform produced by said low contrast patterns to model parameters and based on said comparison of said signal averaged waveform produced by said high contrast patterns to model parameters.