DISSECTION OF THE EVE, 95 
16. Irisand Pupil. The iris is now completely ex- 
posed, and through its opening, the pupil, the anterior 
surface of the lens projects somewhat. Lift up the 
edge of the iris and notice its darkly pigmented pos- 
terior surface. This layer of pigment on the back of 
the iris is known as the zvea. It is continuous with 
the pigmented epithelium of the retina which is pro- 
longed over the ciliary processes to the iris in the 
‘pars ciliaris retin.” 
Lift up the trts with forceps, and cut rt away at zts 
gunction with the chorord round its whole circumfer- 
ence. 
17. The Ciliary Processes and the Suspensory Liga- 
ment. The anterior surface of the lens is now fully 
exposed, and the free edges of the ciliary processes 
lying on it. Wihith the point of a seeker turn back 
the ciliary processes, and the suspensory ligament pass- 
ing from the lens to the processes will be exposed. 
The ligament is too delicate to be seen easily, but if 
the lens is pushed somewhat outward it will be re- 
vealed. 
18. The Capsule of the Lens. The suspensory liga- 
ment is attached directly to the capsule of the lens, 
which is a rather tough though transparent mem- 
brane enveloping the lens. If a bit of the anterior 
surface of the lens is pinched up with the forceps the 
capsule can be cut or broken through, and will peel 
off easily so that the lens can be slipped out. The 
capsule stays behind still attached to the ciliary pro- 
cesses by the suspensory ligament, and if the opera- 
tion has been successfully performed a better view of 
the suspensory ligament will be obtained. 
