A Possible Trait and Status Marker in Bipolar Disorder: The Electroretinogram-Pattern.

The similarity between retinal cells and neurons of the central nervous system allows non-invasive methods to study retinal function, such as the Electroretinogram-Pattern (PERG) to be postulated as possible biomarkers, useful and safe in the study of psychiatric pathologies such as Bipolar Disorder (BD). The objective of the present study is to characterize the differences in the results in the PERG of patients with BD and healthy subjects, as well as to evaluate a possible correlation between these results and the affective decompensations of the manic pole in the group of bipolar patients.