Retinal sections were stained with the following antibodies with our published protocols (34 ,35 (link)) Cone-arrestin (rabbit polyclonal, 1:1,000; Millipore), PKCα (rabbit polyclonal, 1:5,000; Sigma), recoverin (rabbit polyclonal, 1:2,000; Millipore), calbindin D28k (rabbit polyclonal, 1:1,000; Swant), neurofilament-RT97 (mouse monoclonal, 1:1,000; Millipore), parvalbumin (rabbit polyclonal, 1:3,000; Swant), synaptophysin (mouse monoclonal, 1:2,000; Millipore), RPE65 (mouse monoclonal, 1:1,000; Millipore), type IV collagen (rabbit polyclonal, 1:1,000; Millipore), MAB1281 (mouse monoclonal, 1:300; Millipore), nestin (rabbit polyclonal, 1:2,000; Millipore), GFAP (rabbit polyclonal, 1:1,000; Sigma), S100β (mouse monoclonal, 1:250; Sigma), Ki67 (rabbit polyclonal, 1:500; Millipore), TuJ1 (mouse monoclonal, 1:1,000; Sigma), STEM121 (mouse monoclonal, 1:300; StemCells). Anti-mouse or rabbit secondary antibodies conjugated to Alexa Fluor-488 or Alexa Fluor-568 (Life Technologies) were used and counterstained with 49,69-diamidino-2-phenylindole (DAPI). Images were taken with a confocal microscope (Eclipse C1si; Nikon Instruments, Inc., Melville, NY).