We developed a horizontal slice preparation of the adult mammalian retina with the plane of sectioning parallel to the retinal surface. Dendritic fields of nonradially oriented retinal neurons were not truncated, allowing the study of signal processing with patch-clamp and imaging techniques.
Feigenspan, A., Babai, N. Z. Preparation of Horizontal Slices of Adult Mouse Retina for Electrophysiological Studies. J. Vis. Exp. (119), e55173, doi:10.3791/55173 (2017).