Chambers of the Eye and Aqueous Humor

The anterior chamber of the eye (Camera oculi anterior) is inclosed in front by the cornea and behind by the iris and lens (Figs. , , ). 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.