| Schlemm's canal | | | | Enlarged general view of the iridial angle. (Labeled with older label of 'sinus venosus scleræ' at center top.) | | | | The upper half of a sagittal section through the front of the eyeball. (Canal of Schlemm labeled at center left.) | | Gray's | subject #225 1005 | Schlemm's canal, also known as canal of Schlemm or the scleral venous sinus, is a circular channel in the eye that collects aqueous humor from the anterior chamber and delivers it into the bloodstream.[1] Image File history File links No higher resolution available. ...
Image File history File links Download high-resolution version (600x682, 127 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Wikipedia:Grays Anatomy images with missing articles 18 Conjunctiva Lens capsule Iris dilator muscle Iris sphincter muscle...
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A human eye. ...
The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour. ...
The anterior chamber if the fluid-filled space inside the eye between the iris and the corneas innermost surface, the endothelium . ...
The canal is essentially an endothelium-lined tube, resembling that of a lymphatic vessel. On the inside of the canal, nearest to the aqueous humor, it is covered by the trabecular meshwork, this region makes the greatest contribution to outflow resistance of the aqueous humor. This is an area of tissue located around the base of the cornea, near the ciliary body, and is responsible for draining the aqueous humour from the eye via the anterior chamber (the chamber on the front of the eye covered by the cornea). ...
Named after Friedrich Schlemm (1795-1858), a German anatomist. Friedrich Schlemm (1795-1858} was a professor of anatomy at the University of Berlin. ...
Role in glaucoma
The canal transfers approximately 2-3 microliters of aqueous humor per minute.[2] If debris builds up, due to infection or injury in the aqueous humor, the canal is blocked and glaucoma is the result.
Canaloplasty Canaloplasty is an advanced, nonpenetrating procedure designed to enhance and restore the eye’s natural drainage system to provide sustained reduction of intraocular pressure. Canaloplasty utilizes microcatheters in a simple and minimally invasive procedure. To perform a canaloplasty, a surgeon will create a tiny incision to gain access to Schlemm's canal. A microcatheter circumnavigates Schlemm's canal around the iris, enlarging the main drainage channel and its smaller collector channels through the injection of a sterile, gel-like material called viscoelastic. The catheter is then removed and a suture is placed within the canal and tightened. By opening Shlemm's canal, the pressure inside the eye is relieved. Intraocular pressure is the fluid pressure inside the eye. ...
Catheter disassembled In medicine, a catheter is a tube that can be inserted into a body cavity, duct or vessel. ...
A viscoelastic material is one in which: hysteresis is seen in the stress-strain curve. ...
See also Intraocular pressure is the fluid pressure inside the eye. ...
Ocular hypertension (OHT) is intraocular pressure higher than normal in the absence of optic nerve damage or visual field loss . Current consensus in ophthalmology defines normal introcular pressure (IOP) as that between 10 mmHg and 21 mmHg . Elevated IOP is the most important risk factor for glaucoma, so those with...
References - ^ Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainsville, Florida: Triad Publishing Company, 1990.
- ^ Johnson MC, Kamm RD. "The role of Schlemm's canal in aqueous outflow from the human eye." Invest Ophthalmol Vis Sci. 1983 Mar;24(3):320-5. PMID 6832907.
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