Methods of visual acuity determination with the spatial frequency sweep visual evoked potential

摘要

The spatial frequency sweep visual evoked potential (sVEP) is used to rapidly determine visual acuity in children or non-responsive patients. Two techniques have been used to separate signal from noise: (1) the 95% confidence interval for the signal amplitude (95% CI) or (2) the amplitude of a Fourier frequency adjacent to 2× the signal frequency (DFT). The purpose of this study is to determine if there is a significant difference in acuity estimates with these techniques.