 Overall, the study is well motivated, well constructed, and well presented. It is really positive to see the morphology of all the RGCs in supplementary material. The manuscript primarily describes viral-mediated morphology and functional imaging of retinal ganglion cells that connect via the superior colliculus to two important brain nuclei (LP, Pbg); this morphological and functional dataset is important and impressive. In addition, the authors record extracellularly from neurons in the LP and Pbg (with unknown inputs) and measure response to several stimuli. 