Anterior segment of eyeball


The anterior segment or anterior cavity is the front third of the eye that includes the structures in front of the vitreous humour: the cornea, iris, ciliary body, and lens.
Within the anterior segment are two fluid-filled spaces:
Aqueous humor fills these spaces within the anterior segment and provides nutrients to the surrounding structures.
Some ophthalmologists and optometrists specialize in the treatment and management of anterior segment disorders and diseases.