The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . or rectus, and the inferior oblique; thelatter branch is the largest of the three, and gives off a short, thickbranch to the lower part of the lenticular ganglion, forming its in-ferior, or motor, root. The fourth nerve (trochlcaris) enters the orbit by way of thesphenoidal fissure, passes above all of the other nerves, and suppliesthe superior oblique muscle. The ophthalmic, or first division of the fifth {trigeminus), whichis the smallest of the three divisions, furn
The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . or rectus, and the inferior oblique; thelatter branch is the largest of the three, and gives off a short, thickbranch to the lower part of the lenticular ganglion, forming its in-ferior, or motor, root. The fourth nerve (trochlcaris) enters the orbit by way of thesphenoidal fissure, passes above all of the other nerves, and suppliesthe superior oblique muscle. The ophthalmic, or first division of the fifth {trigeminus), whichis the smallest of the three divisions, furnishes the sensory supply to 410 ANATOMY (GROSS) OF THE HUMAN EYE the eyeball, the lachrymal gland, and the conjunctiva. It enters theorbit through the sphenoidal fissure, after first dividing into threebranches—the lachrymal, frontal, and nasal. The lachrymal branch enters the orbit in a separate tube of duramater, and accompanies the lachrymal artery along the superiorborder of the external rectus. It gives off filaments to the lachrymalgland, and, continuing on forward, terminates in the skin of theupper lid. a d €. Ciliary Nerves. a, Short ciliary nerve; b, Long ciliary nerve; c, Vena vorticosa; d, Sclera;e, Choroid; f. Ciliary muscle; g, Cornea; h, Iris. The frontal branch, or largest division of the ophthalmic, entersthe orbit through the sphenoidal fissure above the muscles, and, inits course through the orbital cavity to the brow, lies between thelevator palpebral superioris and the periosteum. The nasal branch enters the orbit between the two heads of theexternal rectus; it passes obliquely across the orbit beneath the leva-tor palpebrffi superioris and the superior rectus to its point of exitfrom the orbit. This division of the fifth nerve has three branches—ganglionic, long ciliary, and infratrochlear. The ganglionic branch forms the superior or long root of the len-ticular ganglion, and is a sensory root. The long ciliary nerves, of which there are two or three
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectophthalmology, bookye
