Visual electrophysiological system is a new type of ophthalmic examination equipment, which can accurately locate and diagnose ophthalmic diseases in the early stage by extracting the specific electrophysiological signals emitted by human visual system under the stimulation of specific optical signals.
The technology of visual electrophysiology is based on the measurement of bioelectricity in the process of visual formation. It can reflect the functional state of visual system at different levels from different perspectives. It has the characteristics of non-invasive, objective, quantitative and repeatable. It has the characteristics of non-invasive, objective, quantitative and repeatable in the diagnosis and differential diagnosis of ophthalmic diseases, the evaluation of prognosis and curative effect of diseases, and the objective evaluation of visual function It plays an important role.
What is the clinical significance of visual electrophysiological examination?
Because the eye is stimulated by light or graphics, it will produce tiny electric activities such as potential and current, which is visual electrophysiology. The electric activities of normal people and patients with ophthalmopathy are different, so we can diagnose some ophthalmopathy by visual electrophysiological examination. Visual electrophysiological examination includes three parts: electrooculogram (EOG), electroretinogram (ERG) and visual evoked potential (VEP).
Electrooculogram (EOG) mainly reflects the function of photoreceptor complex.
Electroretinogram (ERG) mainly reflects the function of photoreceptor cells to bipolar cells and amacrine cells.
VEP mainly reflects the conduction function from retinal ganglion cells to visual center.
In a word, visual electrophysiological examination is an objective examination method of noninvasive visual function. It is not only suitable for general patients, but also for patients who can’t do psychophysical examination, such as infants, people with low intelligence or pseudoblindness. In addition, for those who can’t see the fundus of refraction, it can overcome the obstacle of turbidity and measure the visual function, such as cataract and vitreous confusion Turbid. The visual electrophysiological examination before retinal detachment can help to predict the recovery of visual acuity. In addition, if the visual electrophysiological examination method is applied together, the whole visual system disease can be diagnosed in different levels, and the visual system can be scanned in function. Therefore, visual electrophysiological examination has been widely used in ophthalmology.
&The above is the clinical significance of visual electrophysiological examination. If your child suffers from mental retardation, refraction and other symptoms, please go to the hospital for visual electrophysiological examination! , if you want to know more about children’s home electric shock prevention, please go to this safety net to find relevant information