title: Normal variations of the optic disc as observed by conventional ophthalmoscopy and their anatomic correlations.
mesh_terms: D003116:Color; D005901:Glaucoma / Q000175:diagnosis; D006801:Humans; D009887:Ophthalmoscopy; D009898:Optic Disk / Q000033:anatomy & histology*; D009900:Optic Nerve / Q000033:anatomy & histology*