Topographical anatomy of the ciliary sulcus.

The topography of the ciliary sulcus area in humans was examined by slitlamp biomicroscopy and scanning electron microscopy. Characteristics of this area included the following: the sulcus was angulated anteriorly; the ciliary processes were of unequal length; the zonules did not insert on the tips of the ciliary processes but, instead, inserted slightly posteriorly; the contour of the sulcus area was irregular; bands stretched from the base of the ciliary processes to the posterior surface of the iris, making the sulcus a potential space in some areas of the eye. Effects of this topography on IOL implantation are postulated.