Qiu K, et al. - Based on thickness measurements of macular inner retinal layers with spectral-domain optical coherence tomography (OCT) in healthy subjects, researchers determined the influence of the optic disc–fovea distance (DFD) on the normative classifications by analyzing data of 182 eyes from 182 healthy subjects. For this investigation, macula and optic disc imaging with the Topcon 3D OCT 2000 was performed. In the thickness assessment of the macular inner retinal layers, eyes with a greater DFD were prone to false-positive classifications. The study findings suggested that the thicknesses should always be interpreted in the context of DFD.