Anterior Surface
The collarette is indistinct superiorly. Below, it is marked by crypts and trabeculae. The inner part of ciliary zone between the collarette and contraction furrows is relatively smooth, and its stroma is densely matted. In contrast, the surface of the attenuated pupillary stroma exhibits myriad interweaving strands and minute crypts. The interrupted, discontinuous nature of the contraction furrows is evident at right (SEM, X 80).
