title: The optic disc in glaucoma: pathogenetic correlation of five patterns of cupping in chronic open-angle glaucoma.
abstract: Visible alteration of the optic nerve head is a hallmark of glaucoma. Five patterns in which this alteration becomes manifest have been discussed. These different patterns of cupping suggest different pathogenetic mechanisms, both mechanical and vascular.
mesh_terms: D002908:Chronic Disease; D003937:Diagnosis, Differential; D005901:Glaucoma / Q000175:diagnosis / Q000209:etiology*; D006470:Hemorrhage; D006801:Humans; D009898:Optic Disk; D009900:Optic Nerve; D009901:Optic Nerve Diseases / Q000175:diagnosis*