Flicker electroretinograms recorded with mydriasis-free RETeval system before and after cataract surgery

Purpose The purpose of this study is to compare the amplitudes and peak times of the flicker electroretinograms (ERGs) recorded before and after cataract surgery with the RET eval system (LKC Technologies, Gaithersburg, MD, USA) from eyes without dilation. Patients and methods Thirty-two eyes of 32 patients (77.3±6.5 years) that had grade 2 Emery–Little nuclear or cortical cataract without any other abnormalities were studied. Flicker ERGs were recorded with the RET eval system under mydriatic-free conditions. Skin electrodes were used to pick-up the ERGs that were elicited by white light delivered at a rate of 28.3 Hz and intensity of 2, 8, and 32 Td-s. The amplitudes and peak times of the flicker ERGs before and after cataract surgery were compared. Results The mean amplitudes were significantly increased after the removal of the cataractous lenses at the three stimulus intensities (2 Td-s, P