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©2013 UpToDate ® Print Email Glaucoma: Angle anatomy of the eye The angle is the recess formed by the irido-corneal juncture. The scleral spur, trabecular meshwork, and Schwalbe's line lie within this angle. The trabecular meshwork is a fenestrated structure that transmits aqueous fluid to Schlemm's canal, from which it drains into the venous system. The normal flow of aqueous is demonstrated here. Reproduced with permission from Trobe JD. The Physician's Guide to Eye Care. Foundation of the American Academy of Ophthalmology, San Francisco, 2001. p.158. Copyright © American Academy of Ophthalmology.
©2013 UpToDate ® Print Email Glaucoma: Angle anatomy of the eye The angle is the recess formed by the irido-corneal juncture. The scleral spur, trabecular meshwork, and Schwalbe's line lie within this angle. The trabecular meshwork is a fenestrated structure that transmits aqueous fluid to Schlemm's canal, from which it drains into the venous system. The normal flow of aqueous is demonstrated here. Reproduced with permission from Trobe JD. The Physician's Guide to Eye Care. Foundation of the American Academy of Ophthalmology, San Francisco, 2001. p.158. Copyright © American Academy of Ophthalmology. Acute angle-closure glaucoma The pupillary margin blocks the passage of aqueous from the posterior chamber to the anterior chamber (pupillary block), ballooning the iris forward (iris bombe), causing the iris root to occlude the trabecular meshwork and completely obstruct drainage of aqueous fluid from the anterior chamber (angle closure). The resulting rapid elevation of intraocular pressure requires urgent intervention to prevent permanent visual loss. Reproduced with permission from: Trobe JD. The Physician's Guide to Eye Care. Foundation of the American Academy of Ophthalmology, San Francisco, 2001. p.158. Copyright © American Academy of Ophthalmology.