Fig. 1From: Utility of combining spectral domain optical coherence tomography structural parameters for the diagnosis of early Glaucoma: a mini-reviewLocation of scans and parameters measured by four selected SDOCT devices. Peripapillary scan for measuring RNFL thickness (overall and sectoral) and GCIPL thickness on Cirrus HD-OCT (top let), macular retinal thickness grid on Spectralis (top right), GCC on RTVue (bottom left), and macular RNFL, GCC and GCIPL on Topcon 3D-OCT (bottom right). The same scan centered on the ONH is also used to quantify ONH parametersBack to article page