Anterior segment of eyeball

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Anterior segment of eyeball
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
Details
Identifiers
Latin segmentum anterius bulbi oculi
MeSH D000869
Anatomical terminology
Diagram of anterior segment of a human eye (horizontal section of the right eye) 1. Lens, 2. Zonule of Zinn or ciliary zonule, 3. Posterior chamber and 4. Anterior chamber with 5. Aqueous humour flow; 6. Pupil, 7. Corneosclera with 8. Cornea, 9. Trabecular meshwork and Schlemm's canal. 10. Corneal limbus and 11. Sclera; 12. Conjunctiva, 13. Uvea with 14. Iris, 15. Ciliary body. Schematic diagram of anterior segment human eye.svg
Diagram of anterior segment of a human eye (horizontal section of the right eye)
1. Lens, 2. Zonule of Zinn or ciliary zonule, 3. Posterior chamber and 4. Anterior chamber with 5. Aqueous humour flow; 6. Pupil, 7. Corneosclera with 8. Cornea, 9. Trabecular meshwork and Schlemm's canal. 10. Corneal limbus and 11. Sclera; 12. Conjunctiva, 13. Uvea with 14. Iris, 15. Ciliary body.

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] [4]

Contents

Within the anterior segment are two fluid-filled spaces:

Aqueous humour 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

References

  1. ↑ "Medical gallery of Blausen Medical 2014". WikiJournal of Medicine. 1 (2). 29 August 2014. doi: 10.15347/WJM/2014.010 .
  2. 1 2 Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainesville, Florida: Triad Publishing Company, 1990.
  3. 1 2 "Departments. Anterior segment." Archived September 27, 2006, at the Wayback Machine Cantabrian Institute of Ophthalmology.
  4. ↑ Fraser, AS; Ang, M; Bellchambers, A; Chu, CJ; Denniston, AK; Downie, LE; Evans, T; Hau, S; Huang, AS; Keane, PA; Liu, X; Mehta, JS; Ometto, G; Petzold, A; Tsui, E; Fraser, TS; Xu, B; Thaung, C; Solebo, AL (14 August 2025). "Proposed Nomenclature for Landmarks in Anterior-Segment OCT: The APOSTEL-AS Panel Consensus". JAMA ophthalmology. doi:10.1001/jamaophthalmol.2025.2414. PMID   40810988.


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