The =anterior chamber= of the eye (Camera oculi anterior) is inclosed in
front by the cornea and behind by the iris and lens (Figs. 552, 555,
557). It communicates through the pupil with the =posterior chamber=
(Camera oculi posterior); this is a small annular space, triangular in
cross-section, which is bounded in front by the iris, behind by the
peripheral part of the lens and its ligament, and externally by the
ciliary processes. The chambers are filled by the =aqueous humor= (Humor
aqueus), a clear fluid which consists of about 98 per cent. of water,
with a little sodium chlorid and traces of albumin and extractives. It
is carried off chiefly through the spaces (of Fontana) in the zonula
ciliaris or suspensory ligament of the lens into the plexus venosus
scleræ.