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KMID : 0390119920320010077
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Journal of Pusan Medical College
1992 Volume.32 No. 1 p.77 ~ p.84
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Clinical Significance of Visual Evoked Potential & Flash-Electroretinogram in Neurological and Ophthalmological Diseases
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Abstract
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The pattern reversal evoked potential(PRVEP), flash VEP and flash electroretinogram(ERG) were perfomred on 215 patients, 374 eyes with visual disturbance.
The results were as follows :
1) Delayed P1 latency in PRVEP was present in 76.9% of the patients with retrobulbar neuritis, 90.5% of optic atrophy, in 90.0% of traumatic-ischemic lesions and about 50.0% of retinopathy. Also normal latency and a decrease of amplitude
occurred
in
45.5% of amblyopia patents.
2) Absent or delayed flash VEP was present only in 5.0-33.3% of prechiasmal lesions of neurological and opthalmological diseases, but in retrochiasmal lesions(eg, severe head trauma, hydrocephalus, tumors, CVA) were occured in 69.2% of the
cases.
3) Abnormal flash ERG was present in the following : pigmentary degeneration of retina 100%, global rupture 100%, retinal detachment 83.3%, diabetic retinopathy 70.5%, corneal lesions 80.0%, optic atrophy 17.5%.
4) A usefulness of simultaneous recording of VEP and ERC in the assessment of optic atrophy, diabetic retinopathy, PRVER in multiple sclerosis, flash VEP in amblyopia and only flash ERG in pigmentary degeneration of retina was observed by tis
study.
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KEYWORD
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