VISION. 



789 



The Ciliary System. These break through the sclera to supply 

 the choroid, the ciliary body, and the iris. 



The short ciliary, about six to twelve in number, supply the 

 choroid and ciliary processes. 



The long ciliary, two in number, penetrate the sclerotic, run 

 forward between the choroid and sclerotic to the ciliary muscle, 

 forming a very vascular circle about the iris. 



i 



10 



Fig. 339. Diagram of the Lymph Spaces of the Eyeball. 

 (After FUCHS.) 



1, Anterior chamber. 2, Posterior chamber. 3, Canal of Schlemm. 4, Hya- 

 loid canal. 5, Anterior ciliary vein. 6, Continuation of Tenon's capsule on the 

 ocular tendons. 7, Lymph space around the vena vorticosa. 8, Perichoroidal 

 space. 9, Supra-vaginal space. 10, Inter-vaginal space. 



In deep-seated ciliary congestion you have a pus-zone about the 

 cornea, which is much different from the bloodshot eye of conjunc- 

 tivitis. 



The capsule of Tenon is a thin membrane which envelops the 

 eyeball from the optic nerve to the ciliary region, forming a socket 

 in which it plays. On its inner surface it is smooth, and is in con- 

 tact with the outer surface of the sclerotic, the perisclerotic lymph- 



