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Glaucoma is a group of diseases affecting the optic nerve that results in vision loss and is frequently characterized by raised intraocular pressure (IOP). There are many glaucoma surgeries, and variations or combinations of those surgeries, that facilitate the escape of excess aqueous humor from the eye to lower intraocular pressure, and a few that lower IOP by decreasing the production of ...
There are different types of glaucoma, but the most common are called open-angle glaucoma and closed-angle glaucoma. [7] Inside the eye, a liquid called aqueous humor helps to maintain shape and provides nutrients. The aqueous humor normally drains through the trabecular meshwork. In open-angle glaucoma, the draining is impeded, causing the ...
Anterior chamber paracentesis is used in the management of acute angle closure glaucoma, and uveitis. [1] [2] It can also prevent a raise in IOP after intravitreal injections. [3] Aqueous humor collected using anterior chamber paracentesis may be used for clinical diagnosis of infectious uveitis. [4]
Early-stage secondary glaucoma, observed as angle-closure glaucoma, results from the blockage and inflammation of the peripheral anterior synechiae structure. [5] However, early-stage secondary glaucoma rarely occurs with the readily available prescription of anti-inflammatory medications. On the other hand, late-stage glaucoma is commonly ...
Role in treatment of Glaucoma [ edit ] Open-angle glaucoma (OAG) and closed-angle glaucoma (CAG) may be treated by muscarinic receptor agonists (e.g., pilocarpine ), which cause rapid miosis and contraction of the ciliary muscles, this pulls the scleral spur and results in the trabecular meshwork being stretched and separated.
In acute angle-closure glaucoma cases, surgical iridectomy has been superseded by Nd:YAG laser iridotomy, because the laser procedure is much safer. Opening the globe for a surgical iridectomy in a patient with high intraocular pressure greatly increases the risk of suprachoroidal hemorrhage , with potential for associated expulsive hemorrhage .
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