Results: 49. 5% of children showed abnormality in EEG. That is, functional disorder of cerebral cells existed and 66. 8% showed abnormal aural conduction in their brainstem evokedpotential.
Objective To study the rate of abnormal of visual evokedpotential (VEP), the degree of injury, and estimate of the prognosis in cases with optic nerve contusion.
目的探讨视神经挫伤后的视觉诱发电位（VEP）的异常率、挫伤程度及预后估计。
3
Results The peripheral nerve conduction velocity and evokedpotential amplitude are all abnormal in 20 patients and the disorders in sensory nerve are more serious than those in the motor one.