Anterior segment

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Anterior segment
Cataract in human eye.png
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
Schematic diagram of the human eye en.svg
Schematic diagram of the human eye.
Latin segmentum anterius bulbi oculi
Dorlands/Elsevier s_07/13264628

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.[1] [2]

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 specialize in the treatment and management of anterior segment disorders and diseases.[2]


  1. 1.0 1.1 Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.
  2. 2.0 2.1 "Departments. Anterior segment." Cantabrian Institute of Ophthalmology.

See also