The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . it, Showing the Central Artery and the Seat ofLesions in Both Bulbar and Ketrobulbar Optic Neuritis. a, Optic Nerve; b, Eyeball; c, Extraneural portion of the central artery of theretina; c, The intraneural portion; d, External wall of the orbit; e. Ethmoidcells; f. Internal carotid; 1, Possible situation of optic lesions in bulbar neuritis;2, Possible situation of optic lesions in retrobulbar neuritis. without raising a suspicion of their presence, owing to the compar
The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . it, Showing the Central Artery and the Seat ofLesions in Both Bulbar and Ketrobulbar Optic Neuritis. a, Optic Nerve; b, Eyeball; c, Extraneural portion of the central artery of theretina; c, The intraneural portion; d, External wall of the orbit; e. Ethmoidcells; f. Internal carotid; 1, Possible situation of optic lesions in bulbar neuritis;2, Possible situation of optic lesions in retrobulbar neuritis. without raising a suspicion of their presence, owing to the compara-tively wide space existing between the globe and the orbital outer wall of the orbit is formed behind by the greater wing of ANATOMY (GROSS) OF THE HUMAN EYE 403 the sphenoid; in front by the orbital process of the malar bone, andthe external angular process of the frontal bone. The floor of the or-bit, which slopes downward, forward, and outward, is composed ofthe orbital plates of the superior maxilla and the palate bone, and theorbital process of the malar bone. It forms the roof of the antrum So is. -^ ipm, :p. ^ %: cm Septum Orbitale, Viewed from in Front. The ni. orbicularis oculi has beendissected ofif. (After Spalteholz.) , septum orbitale; , tarsus superior; , raphe palpebralis lateralis;, tarsus inferior; , os zygomaticum; , n. supraorbitalis; , os fron-tale; , n. f., n. frontalis; n. sup. t., n. supratrochlearis; n. n. infratroch-learis.; , proc. frontalis; , saccus lachryiiialis; , ligament, palpebral,median.; , rima palpebrarum; cm, corpus ; , n. infraorbitalis. of Highmoro. The margins of the orbit are composed of a hard, andvery strong, bony ring, well calculated to resist blows and otherforms of injury from blunt weapons. The depth of the cavity, when 404 ANATOMY (GROSS) OF THE HUMAN EYE not covered with soft parts, is about 1% inches; at its anterior open-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectophthalmology, bookye
