CILIARY BODY 577 



equal intervals from each other, should, in the next place, be made through 

 the anterior part of the sclera. The strips of sclera should then be 

 separated from the ciliary muscle, and pinned outwards in a cork- 

 lined tray filled with water. The last step in the dissection consists in the 

 removal of the iris. x 



The corona ciliaris lies on the posterior aspect of the 

 orbiculus ciliaris and is continuous anteriorly with the 

 iris and posteriorly with the chorioid. It consists of a number 

 of larger folds, \hzprocessus ciliares, 70 to 72 in number, which 

 are intermingled with a number of smaller folds, the plica 



Ligamentum pectinatum iridis 

 Scleral spur i Radial muscle of iris 



Venous sinus of sclera -. ; j r ; s 



Sclera 



Meridional fibres of ciliary muscle Parts o f c iH ary processes 



Iridial angle Circular fibres of ciliary muscle 



FIG. 255. Section of Iridial Angle. (Prof. Arthur Thomson.) 



ciliares. The ciliary processes extend from the anterior 

 margin of the chorioid to the anterior margin of the corona 

 ciliaris, where they end in bulbous extremities. The bulbous 

 ends occupy the space between the peripheral margin of the 

 iris and the margin of the anterior surface of the crystalline 

 lens, and they form the peripheral boundary of the posterior 

 chamber of the eyeball. The plica ciliares are much less 

 prominent than the ciliary process, and both the processes 

 and the folds are in relation posteriorly with the hyaloid 

 membrane, which separates them from the vitreous body, 

 and with the peripheral part of the zonula ciliaris to which 

 they are attached. 

 VOL. ii 37 



