part of optic glomerulus fly_anatomy.ontology VFB:FBbt_00003698 https://cdn.ncbi.nlm.nih.gov/pmc/blobs/acda/10213501/ccb19d89b056/iyad064f6.jpg optic focus FBbt:00003698 Small and discrete area of the ventrolateral neuropils defined by the presynaptic terminals of visual projection neurons carrying sensory information from the optic lobe (Otsuna and Ito, 2006; Wu et al., 2016). FBbt:00040032 glomerulus ventrolateral neuropils visual system