A retrograde fluorescence double-labeling study of the cat's optic nerve cell which has a bifurcating axon

Injection of the fluorescent tracers, Evans Blue (EB) and 4'-6-Diamidino-2-phenylindole dihydrochloride hydrate (DAPI) or Fluoro-Gold (FG) into the dorsal nucleus of the lateral geniculate body (dLGN) and the ipsilateral superior colliculus (SC) of adult cats demonstrated the existence of double-labeled optic nerve cells in the retina denoting that their axons bifurcate and project to both of these structures. These cells were seen in the temporal half and dorsal-dorsonasal and ventral-ventronasal octants of the ipsilateral retina and accounted for 11.5% of all the labeled cells. On the contralateral side, they were seen in the entire retina and accounted for 13.7% of all the labeled cells.