BioCampus Montepellier 1 article published in JoVE Neuroscience Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo Jolanta Jagodzinska*1, Emmanuelle Sarzi*1, Mélanie Cavalier1, Marie Seveno1, Volker Baecker2, Christian Hamel1,3,4, Marie Péquignot1, Cecile Delettre1 1INSERM U1051, Institut of Neurosciences of Montpellier, 2CNRS UMS3426, BioCampus Montepellier, 3University of Montpellier, 4CHRU Montpellier, Centre of Reference for Genetic Sensory Diseases, CHU Gui de Chauliac Hospital This manuscript describes a protocol for the in vivo imaging of the mouse retina with high-resolution spectral domain optical coherence tomography (SD-OCT). It focuses on retinal ganglion cells (RGC) in the peripapillary region, with several scanning and quantifying approaches described.