Anterior segment of eyeball

The anterior segment or anterior cavity[1] is the front third of the eye that includes the structures in front of the vitreous humour: the cornea, iris, ciliary body, and lens.[2][3]

Anterior segment of eyeball
Human eye Anterior Segment - Magnified view seen on examination with a slit lamp under diffuse illumination showing conjunctiva overlying the white sclera, transparent cornea, pharmacologically dilated pupil and cataract
Latinsegmentum anterius bulbi oculi
Anatomical terminology

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.[3]

See also


  2. Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainesville, Florida: Triad Publishing Company, 1990.
  3. "Departments. Anterior segment." Archived September 27, 2006, at the Wayback Machine Cantabrian Institute of Ophthalmology.
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