A Comparative Study of Visual Evoked Potential between Dominant and Non-Dominant Eyes

The objective was to study the P100 latency and amplitude in Visual Evoked Potentials (VEPs) with dominant and non-dominant eye individuals. VEPs were recorded in 30 dominant and non-dominant eye males using a Neuropack machine. Latency and Amplitude of VEPs (P100) were measured and analyzed statistically. The effect of eye dominance as seen in was that the latency of P100 was less in the dominant eye compared to the non-dominant eye. The results were consistent in the right and left eye dominance but were not statistically significant. The amplitude of N75-P100 was increased in the dominant eye and was statistically significant (p<0.05) compared to the non-dominant eye. The V E P recordings from the dominant eye showed that P100 component latency is decreased and amplitude is increased as compared to nondominant eye. The amplitude and latency differences between dominant and nondominant eyes provide objective electrophysiological evidence of lateralization in the central nervous system. V E P is affected in eye dominance. It should be taken into account while comparing V E P’s of two eyes of the same subject.