has synaptic IO in region adult optic lobe columnar neuron optic column optic lobe narrow field columnar neuron 2012-07-23T02:45:37Z VFB:FBbt_00110136 This definition follows Fischbach and Dittrich (1989) in classifying based on the extension of the collaterals. A narrow field columnar neuron is classified as columnar by Morante and Desplan (2008). Columnar interneuron of the optic lobe whose collaterals are restricted to a single optic column. optic lobe unicolumnar neuron optic lobe uni-columnar neuron fly_anatomy.ontology FBbt:00110136 optic lobe wide-field columnar neuron