title: Self-assessment quiz. Coloboma of the optic nerve and retina.
authors.forename: C A
authors.initials: CA
authors.lastname: Servodidio
authors.forename: D H
authors.initials: DH
authors.lastname: Abramson
authors.forename: S P
authors.initials: SP
authors.lastname: Martin
authors.forename: S I
authors.initials: SI
authors.lastname: Afran
mesh_terms: D002648:Child; D003103:Coloboma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D009900:Optic Nerve / Q000002:abnormalities* / Q000000981:diagnostic imaging; D012160:Retina / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014463:Ultrasonography