optic vesicle
http://purl.obolibrary.org/obo/UBERON_0004128
http://purl.obolibrary.org/obo/UBERON_0002346
http://purl.obolibrary.org/obo/UBERON_0003071
http://purl.obolibrary.org/obo/UBERON_0010312
http://purl.obolibrary.org/obo/UBERON_0000479
http://purl.obolibrary.org/obo/UBERON_0004121