The American encyclopedia and dictionary of ophthalmology Edited by Casey AWood, assisted by a large staff of collaborators . eyeball, is adelicate fold, or reduplication, of the conjunctiva, called the plicasemilunaris conjunctivcv; it is analagous to the nictitating membrane(q. V.) found in birds. The blood supply of the ocular conjunctiva is derived chiefly fromthe posterior conjunctival branches of the vascular arches of the lids,by way of the fornices; also from the anterior ciliary vessels, whichcome out of the four straight eye-muscles. These latter course under-neath the conjunctiva up
The American encyclopedia and dictionary of ophthalmology Edited by Casey AWood, assisted by a large staff of collaborators . eyeball, is adelicate fold, or reduplication, of the conjunctiva, called the plicasemilunaris conjunctivcv; it is analagous to the nictitating membrane(q. V.) found in birds. The blood supply of the ocular conjunctiva is derived chiefly fromthe posterior conjunctival branches of the vascular arches of the lids,by way of the fornices; also from the anterior ciliary vessels, whichcome out of the four straight eye-muscles. These latter course under-neath the conjunctiva up to near the limbus, where they suddenlydisappear and pass through the sclera into the interior of the eyeball;before doing this, however, they give off anterior conjunctivalbranches which anastomose with the posterior conjunctival vesselsto form a network of vascular loops close up to the margin of the 358 ANATOMY (GROSS) OF THE HUMAN EYE cornea. From this network the cornea derives the major portionof its nourishment. Other branches of the anterior ciliary vesselsrun backward to anastomose with those of the Muscles of Orbit as Viewed from Above and Behind. a. Internal rectus muscle. b. External rectus muscle. c. Superior rectus muscle. d. Elevator of the upper lid (severed). e. Superior oblique muscle. f. Pulley of superior oblique. g. Superior oblique tendon. h. Inferior oblique muscle (insertion). i. Eyeball. j. Lachrymal gland. k. Orbital fat. 1. Optic nerve. The vessels run loosely in the conjunctival tissue, so that it isalways possible to differentiate them from the deeper vessels by ANATOMY (GROSS) OF THE HUMAN EYE 359 virtue of the fact that they can easily be moved to and fro with themembrane itself. The veins of the conjunctiva, both palpebral and ocular, pursuevery nearly the same course as the accompanying arteries, and aretributary to the ophthalmic vein. Branches of the ophthalmic division of the fifth cerebral nervefurnish the sensory supply to the c
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectophthalmology, bookye
