The blood supply of the optic nerve and optic papilla.
D000818:Animals; D005901:Glaucoma / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D007427:Intracranial Pressure; D007429:Intraocular Pressure; D007511:Ischemia / Q000150:complications; D009900:Optic Nerve / Q000098:blood supply* / Q000503:physiopathology; D011859:Radiography; D012171:Retinal Vessels / Q000000981:diagnostic imaging / Q000503:physiopathology