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A-Z Glossary

Table of Contents

Anterior Chamber

Danielle Stoken
Written byDanielle Stoken
  • Last updated December 13, 2022

What is the Anterior Chamber?

The eye’s anterior chamber is located between the iris and the innermost corneal surface.1 It is filled with fluid called aqueous humor that is secreted by the ciliary body.2

Several conditions result from a dysfunction (typically caused by fluid drainage issues) like glaucoma (serious eye disease) and hyphema (hemorrhage due to trauma).3

Key Points

  • The anterior (front) chamber is one of three fluid-filled spaces in the eye, located between the iris and the cornea. 
  • It allows fluid to flow to the eye to carry out vital functions. 
  • Disruptions to the fluid that flows from this chamber can lead to visual complications.
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Understanding the Anterior Chamber

There are three chambers of the eye, each filled with fluid:

  • The anterior chamber (between the cornea and the iris and filled with aqueous humor)4
  • The posterior chamber (between the iris, zonules and the lens and filled with aqueous humor)4
  • The vitreous chamber (between the lens and the retina and filled with vitreous humor)4

The anterior chamber aqueous humor provides nutrients to the ocular surface in order to allow the cornea and iris to carry out their respective functions of reflecting and filtering light that enters the eye.5

Anterior Chamber Complications

Disruptions to the aqueous humor inside can lead to complications that affect eye sight. In this case, your eye doctor (optometrist or ophthalmologist) will evaluate your symptoms and recommend an effective treatment plan.6

Glaucoma

Experts believe that the most common types of glaucoma (a group of eye diseases that can lead to blindness) are caused by high eye pressure.6 When there is dysfunction in the anterior chamber, aqueous fluid can build up. Then, the build-up can lead to elevated pressure in the eye.7

Hyphema

Hyphema is the accumulation of red blood cells within the anterior chamber.7 Hyphemas can result from blunt force trauma to the eyeball or after eye surgery, such as cataract surgery.

What’s more, patients with hyphemas typically complain of blurry vision and can see that there is blood in their eyes. For that reason, your eye doctor will determine the grade based on the amount of blood present in the front chamber.8

Cataracts

If a cataract becomes too large, then it can narrow the front chamber. Under those circumstances, the narrowing can disrupt the aqueous humor flow and lead to high eye pressure. Therefore, your eye doctor (optometrist or ophthalmologist) may recommend cataract surgery.

In the case of complicated cataract surgery, the front chamber can be used to implant an anterior chamber intraocular lens (ACIOL).

Sources

  1. “Eye Terminology for Eye Technicians.” Allergan TechAlliance, https://www.allergantechalliance.com/Eye-Conditions/EyeCare-Terminology. Accessed 12 April 2022.
  2. “anterior chamber – Definition.” OpenMD.com, https://openmd.com/define/anterior+chamber. Accessed 12 April 2022.
  3. Vislisel, Jessi. “Anterior chamber intraocular lens (ACIOL) implant.” EyeRounds. Case reports, tutorials, videos, images from Univ of Iowa Dept of Ophthalmology, http://eyerounds.org/. Accessed 12 April 2022.
  4. Kolb, Helga. “Gross Anatomy of the Eye by Helga Kolb – Webvision.” Webvision, 25 January 2012, https://webvision.med.utah.edu/book/part-i-foundations/gross-anatomy-of-the-ey/. Accessed 12 April 2022.
  5. “The Anatomy of the Eye | Anterior Segment.” Precision Family Eye Care, http://www.precisionfamilyeyecare.com/eye-encyclopedia/the-anatomy-of-the-eye-anterior/. Accessed 12 April 2022.
  6. Houser, Kourtney. “Anterior Chamber Intraocular Lenses – EyeWiki.” EyeWiki, https://eyewiki.aao.org/Anterior_Chamber_Intraocular_Lenses. Accessed 12 April 2022.
  7. “Glaucoma and Eye Pressure.” National Eye Institute, 25 March 2022, https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/glaucoma/glaucoma-and-eye-pressure. Accessed 12 April 2022.
  8. Syed, Zeba A. “Hyphema – EyeWiki.” EyeWiki, https://eyewiki.org/Hyphema. Accessed 12 April 2022.

 

Related Terms

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Vitreous Body

or vitreous humor is the clear, gelatinous extracellular matrix (ECM) structure that fills the posterior part of the eye

Contrast Sensitivity

is the ability to distinguish between an object and the background

Dacryoadenitis

is inflammation of the main or accessory lacrimal gland. The lacrimal gland secretes tears

Anisometropia

is a condition in which one eye is more nearsighted or farsighted than the other

Puncta

play an important role in tear drainage. Puncta can be occluded to treat dry eye disease and may improve symptoms

Leber Congenital Amaurosis (LCA)

is a congenital retinal dystrophy resulting in nystagmus and significantly reduced vision

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