title: Experimental observations on the echograms of the optic nerve and on the effects of some tissues upon them.
mesh_terms: D000818:Animals; D009801:Oculomotor Muscles / Q000502:physiology; D009900:Optic Nerve / Q000502:physiology*; D012590:Sclera / Q000502:physiology; D013552:Swine; D014465:Ultrasonics