224 



Organ of Vision. 



PJurus cilfarii 

 (Canalis Schlemm 



flam.. o,d conjun 



Ram. perfo 

 A. ciliar. an 

 V ciliar 



Circ. iria. arter. nnj. 



-A. ciliar. ant 



Vnsa vtiyinalia 



-A. ciliar. post. long, 

 lar. post. Itrev. 



~A.lccntral?\ 

 ,. ' ? \retinac 

 -V. central.} 



302. Diagram of the Bloodvessels of the Eyeball. 



Magn. = 4. 

 After The odor Leber. 



The iris consists of muscular and connective tissue, besides numerous 

 vessels and nerves ; its inner e d g e, Mar go pupillarls, forms the margin 

 of the pupil, Pupilla ; between it and the cornea is the anterior cham- 

 b e r of the eye, between it and the lense the posterior chamber; 

 both chambers are filled with the aqueous humor. The outer margin 

 of the iris, Margo ciliaris, is a direct continuation of the Corpus ciliare 

 and is connected with the Membrana Desccmetu by means of the Ligamcn- 

 tum pectinatum (see Fig. 303). 



The structure of the iris is seen from Fig. 303 ; of its muscles 

 the circular fibres, Sphincter pupillaz , surround the margin of the 

 pupil, while the radiating fibres, Dilatator pupillae, arise from the 

 margin of the cornea. 



