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Image:Schematic diagram of the human eye with English annotations.svg The anterior segment is the front third of the eye that includes the structures in front of the vitreous humour: the cornea, iris, ciliary body, and lens.<ref name="Cassin">Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.</ref> <ref name="CIO">"Departments. Anterior segment." Cantabrian Institute of Ophthalmology.</ref>

Within the anterior segment are two fluid-filled spaces:

• the anterior chamber between the posterior surface of the cornea (i.e. the corneal endothelium) and the iris.
• the posterior chamber between the iris and the front face of the vitreous.<ref name="Cassin"/>

Aqueous humor fills these spaces within the anterior segment and provides nutrients to the surrounding structures.<ref>Miguel Coca-Prados, Ph.D.</ref>

Some ophthalmologists specialize in the treatment and management of anterior segment disorders and diseases.<ref name="CIO"/>

[edit] References

[edit] See also

• List of eye diseases and disorders
• Posterior segment

Sensory system - Visual system - Eye - edit
Fibrous tunic: Conjunctiva | Sclera | Cornea | Schlemm's canal | Trabecular meshwork  Uvea: Choroid | Iris | Pupil | Ciliary body  Retina : Macula | Fovea | Optic disc  Anterior segment (Anterior chamber, Aqueous humour, Posterior chamber, Lens) | Posterior segment (Vitreous humour)