Device for objective evaluation of visual acuity, system and method for detection of visual evoked potential

Abstract

The invention provides a device for the objective evaluation of the visual acuity, a method, a system and a computer storage medium for the detection of the visual evoked potential. The invention realizes the recording of binocular simultaneous asynchronous image stimulation visual evoked potential and the evaluation of objective visual function, In view of the poor fixation in visual acuity test,in the same test, right eye image stimulation and binocular image stimulation, The waveforms of visual evoked potentials (VEP) of left, right and binocular eyes were obtained by superposition method,which is more objective than the traditional method of recording VEP waveforms by stimulating left and right eyes separately, and it is helpful to provide more reliable electrophysiological basis forthe identification of the actual visual acuity of the tested eyes.

Description

technical field [0001] The invention relates to the field of visual evoked potential (visual electrophysiology), in particular to equipment for objectively evaluating visual acuity and a detection system and method for visual evoked potential. In particular, it is a neurophysiological technique and equipment for detecting visual evoked potentials of images in visual acuity appraisal. Background technique [0002] The objective assessment of visual dysfunction, especially central distance vision, has always been a technical hotspot and difficult issue in forensic clinical research and identification practice, and has also attracted much attention in clinical practice. In the practice of identification, the injured often pretend to be blind or exaggerate the degree of visual dysfunction due to the psychology of "punishment" and "compensation". Visual Evoked Potential (VEP) is currently recognized as an effective and objective evaluation center. The detection methods of visual...

AI Technical Summary

Problems solved by technology

However, in identification practice, one eye injury is more common. When inspecting the healthy eye, the examinee often pays high attention and fixes his vision well, so that it is easy to obtain the ideal waveform. When inspecting the injured eye, he often distracts his attention by "turning a blind eye" Or intentionally increase the eye movement to cause poor vision fixation to affect the test results of the test eye, directly affect the value of the visual evoked potential of the image as a detection technology for pseudo-blindness and disguised visual impairment

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