Design and Validation of a Method to Determine the Position of the Fovea by Using the Nerve-Head to Fovea Distance of the Fellow Eye

Abstract

The NFD in one eye provides a confident, reproducible, and valid method to address the position of the fovea in the fellow eye. We recommend using the NFD measured from the center of the nerve-head since the standard error by this method was smallest. Age and refractive error have an effect on NFD.