Posterior chamber of eyeball

The posterior chamber is a narrow space behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes. The posterior chamber consists of small space directly posterior to the iris but anterior to the lens. The posterior chamber is part of the anterior segment[1] and should not be confused with the vitreous chamber (in the posterior segment).

Posterior chamber of the eyeball
Anterior part of the human eye, with label of posterior chamber at right.
Schematic diagram of the human eye (posterior chamber labeled at upper left)
Details
Identifiers
LatinCamera posterior bulbi oculi
TA98A15.2.06.005
A15.2.06.001
TA26794
FMA58080
Anatomical terminology

Posterior chamber is an important structure involved in production and circulation of aqueous humor. Aqueous humor produced by the epithelium of the ciliary body is secreted into the posterior chamber, from which it flows through the pupil to enter the anterior chamber.[2]

The hypermature cataractous lens[3] or, the intraocular lens[4] implanted after cataract surgery may obstruct the aqueous flow through the pupil. The block in flow of aqueous from the posterior to the anterior chamber will lead to a condition known as Iris bombe. In this condition, pressure in the posterior chamber rises, resulting in anterior bowing of the peripheral iris and obstruction of the trabecular meshwork. This may result in an acute attack of angle closure glaucoma.[5] Surgical management of Glaucoma due to Iris bombe include making a small hole in the iris which allows passage of aqueous from posterior chamber to anterior chamber either by YAG or Argon laser iridotomy [6] or by manual iridectomy.[7]

Additional images
  • The upper half of a sagittal section through the front of the eyeball (posterior chamber of eye labeled at center right)
    The upper half of a sagittal section through the front of the eyeball (posterior chamber of eye labeled at center right)

See also

References

Public domain This article incorporates text in the public domain from page 1012 of the 20th edition of Gray's Anatomy (1918)

  1. www.arkeo.com, produced by Arkeo, Inc. "Visual System - Segments of the Eye". teaching.pharmacy.umn.edu. Archived from the original on 2018-12-19. Retrieved 2016-05-10.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. "Flow of Aqueous Humor". yale.
  3. Harpreet Gill, MD Staff Physician, Henry Ford Ophthalmology (Sep 20, 2018). "Phacomorphic Glaucoma". Medscape.{{cite web}}: CS1 maint: multiple names: authors list (link)
  4. Mitchell V Gossman, MD (May 2, 2018). "Pseudophakic Pupillary Block". Medscape.
  5. Christopher Kirkpatrick, MD (October 10, 2013). "Iris Bombe". University of Iowa Carver College of Medicine Department of Ophthalmology & Visual Sciences.
  6. "Iris Bombe". Colombiauniversity Department of Ophthalmology.
  7. Daljit singh. "Iridectomy and Iridotomy". Entokey.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.