Abstract

Background: The Pattern Reversal Visual Evoked Potentials (PRVEPs) are used in evaluating the normal functioning of the visual pathway. Retinopathy being one of the complications of diabetes effecting the visual pathway, the aim of the study is to compare the P100 values with varying duration of Type 2 Diabetes Mellitus (Type 2 DM). Materials and Method: A cross sectional study was done after obtaining written consent from all subjects and obtaining approval from the Institutional Ethics Committee. PRVEPs were performed using Viking Select neuro-diagnostic system .[Viasys Healthcare, USA]. Three study groups were selected basing on the duration of type 2 DM. Group 1 -30subjects with duration of <5 years. Group 2 -30subjects with duration of 5-10 years Group 3- 30 subjects with duration >10 yrs Data was analyzed and processed using EPI INFO statistical software using unpaired student t- test (two-tailed). The level of significance was taken as p<0.05. Results: The intergroup comparative analysis showed that p100 delay was statistically significant. Conclusion- we conclude that p100 latencies increased with the increasing duration of type 2 Diabetes.

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