The eye is divided into three main spaces, or chambers. The largest is the vitreous chamber, filled with the amorphous and somewhat gelatinous material of the vitreous body. This material serves principally to maintain the eye's shape. The anterior and posterior chambers also play a major role in maintaining its normal shape, through the mechanism of balancing the production and drainage of aqueous humor, the fluid which fills both of them.
two fluid-filled chambers are separated from each other by the iris,
a portion of the uveal tunic. They are in communication
via the pupil, the opening in the iris. The anterior chamber's boundaries
are the cornea and the iris; the posterior chamber
is demarcated by the iris and the lens. It is in the posterior chamber that
the aqueous humor is produced, and in the anterior chamber where it is drained.
The posterior chamber is also the location of the apparatus of accommodation
for distance vision.
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