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VEP interpretation 1

Visual evoked potential interpretation 1

Binocular absence of VEPs Technical problems; ocular abnormalities; lack of fixation or acuity; severe bilateral optic nerve defects
Monocular absence of VEPs Optic neuropathy, ocular diosrders
Prolonged VEP latency optic nerve lesion
Increased VEP latency Optic nerve lesion
Increased interocular VEP latency difference Optic nerve lesion
Monocular decreased VEP amplitude Ocular lesion
Binocular decreased VEP amplitude Ocular lesions or chiasmal lesion, any bilateral prechiasmal or chiasmal lesion; low amplitude with normal latencies may be normal
Abnormal bilateral temporal VEPs lesion at or near the optic chiasm
Abnormal corresponding field VEPS Lesion of the posterior visual pathways, the optic radiations or visual cortex
Abnormal monocular hemifield VEP Incomplete optic nerve lesion
Pattern reversal VEP abnormalities with neurologic lesions in the ocular region Absence of VEP, low amplitude VEP
Pattern reversal VEP abnormalities with neurologic lesions in the optic nerve region Absence of VEP, increased full field VEP latency, increased interside VEP latency difference
Pattern reversal VEP abnormalities with neurologic lesions in the optic chiasm region Abnormal bilateral full field VEP, bilateral temporal half-field VEP
Pattern reversal VEP abnormalities with neurologic lesions in the optic tract Abnormal bilateral corresponding half-field VEP; full field VEP may be normal
Pattern reversal VEP abnormalities with neurologic lesions in the occipital cortex Abnormal bilateral corresponding half field VEP; full field VEP may be normal
Created by: schmittse



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