ANATOMY OF THE VISUAL PATHWAY (also
see Chapter 65
)
Overall Structure and Organization of the Eye
The cornea and lens focus light on the retina; the jelly-like
vitreous fills the space between the lens and the retina. The iris controls the
amount of light reaching the retina by altering the size of the pupil.[4]
The eye has three chambers: the anterior chamber extending from the cornea to the
iris, the posterior chamber extending from the iris and ciliary body to the vitreous,
and the vitreous chamber containing the jelly-like vitreous. The ciliary body produces
aqueous humor, which flows through the posterior chamber by way of the pupil to the
anterior chamber and drains to the venous system through the canal
of Schlemm. The ciliary body controls accommodation. Except for the cornea, the
eye is coated by the outer avascular sclera, the vascular intermediate choroid, and
the inner pigmented retina. Anteriorly, the sclera is covered by conjunctiva.[5]
