The term "Aqueous Humor Shunts" refers to medical devices that are used to relieve intraocular pressure in the eye. The word "aqueous" is spelled [eɪkwiəs], with the "a" pronounced as the "ay" sound in "say." "Humor" is spelled [hjuːmər], with the "h" being silent and the "u" pronounced as the "oo" sound in "boo." Lastly, the word "shunts" is spelled [ʃʌnts], with the "sh" pronounced as the "sh" sound in "she" and the "u" pronounced as the "uh" sound in "up." Together, the phrase is pronounced [eɪkwiəs hjuːmər ʃʌnts].
Aqueous humor shunts refer to medical devices or surgical procedures used to redirect or regulate the flow of aqueous humor within the eye. Aqueous humor is a clear, watery fluid that fills the front part of the eye. It is produced by the ciliary body and circulates through the anterior chamber, maintaining the shape and pressure of the eyeball.
Aqueous humor shunts are primarily employed in the treatment of conditions related to intraocular pressure (IOP), such as glaucoma. These shunts are designed to create an alternate pathway for the drainage of aqueous humor, thus reducing the pressure inside the eye and preventing optic nerve damage.
The shunts are typically composed of a biocompatible material, like silicone or polymethyl methacrylate (PMMA), and are comprised of a small tube connected to a reservoir or plate. They can be implanted during a surgical procedure and are commonly placed within the anterior chamber to facilitate the outflow of aqueous humor into the subconjunctival space, where it is absorbed by surrounding blood vessels.
Aqueous humor shunts are often equipped with valves that help maintain an optimal level of intraocular pressure by regulating the rate of aqueous humor drainage. These valves prevent excessive drainage, which could result in low eye pressure and potential complications.
The use of aqueous humor shunts has become a crucial therapeutic option in managing glaucoma, particularly in cases where traditional methods like medication or laser treatments fail to adequately control intraocular pressure. These shunts can often diminish the need for multiple medications and further surgical interventions, contributing to improved management and potential preservation of vision.