6.1 Evolution of Phototransduction, Vertebrate Photoreceptors and Retina by Trevor D. Lamb
6.2 Development of cell types and synaptic connections in the retina. by Josh Morgan and Rachel Wong
6.3 Formation of Early Retinal Circuits in the Inner Plexiform Layer. by Kevin Ford and Marla Feller
6.4 Development of retinal ganglion cell dendritic structure and synaptic connections. by Ning Tian